A weightlifter lifts a set of weights a vertical distance of 2.0 m. If a constant net force of 350 N is exerted on the weights, what is the net work done on the weights?

Answers

Answer 1

Answer:

700 Joules

Explanation:

The work done equals force times distance. Just multiply your two values there.

Side note: It would be more impressive if he'd done it in 1 second rather than 5. You know why? Because POWER=WORK/TIME. The less time it takes him to lift the weight with the same force and distance, the more powerful he is!


Related Questions

pls help, i really dw fail :(​

Answers

Answer:

Using the Newton equation

V²=U² +2as

Given; V=9.2m/s U = 0m/s( because it starts from rest)

S=26.2m.

9.2²=0²+2(26.2)a

a =9.2²/2(26.2)

a=84.6/52.4

a=1.60m/s²

Answer:

2.A

3.D

Explanation:

HOPE THIS HELPS!! :)

The asteroid has an estimated mass of 4000 kg and an orbital speed of 10 m/s. Determine the amount of kinetic energy of the asteroid. *

Answers

Answer:

40,000J

Explanation:

What is the total energy of a system with KE = 1368 J and a PE = 5782J? Express your answer in kJ.

Answers

Answer:

7.150 KJ

Explanation:

The total energy of a system is the sum of the potential and kinetic energy in the system. According to this question, the kinetic energy (KE) = 1368 J and a potential energy (PE) = 5782J.

Total energy of the system will be PE + KE as follows;

1368J + 5782J

= 7150J

However, the question demanded that the answer be in kJ (kilojoules), which is higher than the joules.

Since 1kJ = 1000J

7150J = 7150/1000

= 7.150kJ

3. Which of the following is determined by the
force of gravity?

A weight
B momentum
C mass
D distance

Answers

Answer:

A) weight is determined by the force of gravity.

Answer:

A weight

Explanation:

The answer is weight. That's why someone would weigh more on a different planet, because the planet would have a higher/lower force of gravity.

Please help ill give out brainliest?!!!

Answers

Air resistance because heavy object don’t get affect by air resistance than light object so
Because acceleration is inversely proportional to mass.

Helppp!!!!! Please!!
A 0.144 kg baseball approaches a batter with a speed of 20m/s . The batter lines the ball directly back to the pitcher with a speed of 30m/s . Find the impulse exerted on the ball . If the bat and ball were in contact for 0.012 sec , find the average force exerted on the ball by the bat????

Answers

Answer:

Can you help me in mathematics

is boiling water in a kettle on a stove kinetic or potential energy?

Answers

Answer:

Boiling a kettle is an example of both thermal and kinetic energy. Thermal energy comes from a substance whose molecules and atoms are vibrating faster due to a rise in temperature. Heat energy is another name for thermal energy. Kinetic energy is the energy of a moving object.

it's kinetic!

Element Type of ion formed in a chemical reaction
Phase at room

temperature

Reactivity
W


positive

solid highly reactive
X


does not form ions

gas non-reactive
Y


negative

gas highly reactive
Z positive liquid


somewhat reactive



Using your knowledge of periodic properties and trends, how would these elements BEST be classified and why?

A.
Elements W and Z are nonmetals, Elements X and Y are metals, but Element Y is in Group 1 (alkali metal).

B.
Elements W and Z are metals, Elements X and Y are nonmetals, but Element Y is in Group 18 (noble gas).

C.
Elements W and Z are metals, Elements X and Y are nonmetals, but Element X is in Group 18 (noble gas).

D.
Elements W and Z are nonmetals, but Element W is in Group 17 (halogen). Elements X and Y are metals.

Answers

Answer:C

Explanation:

PLEASE HELLP ILL GIVE BrAINLY AND HEART

you are visiting a town that is in the middle of a large continent. How would you expect the ocean currents to effect the climate in the town?

A ) More Thunderstorms
B ) Cooler Temperatures
C ) Warmer Temperatures
D ) There is little effect on the town's climate

Answers

Answer:

D

Explanation:

How does an increase in thermal energy affect the kinetic energy of the particles in each state of matter

Answers

Explanation:

when there is an increase in thermal energy, the kinetic energy if the matter increases as well.

One of the signs a chemical reaction is taking place

Answers

Answer:  One of the signs a chemical reaction is taking place is the presence of bubbles. :)

How are speed and velocity alike?

A. They both include the total distance traveled.
B.They both require a reference point.
C. They both describe a rate of motion.
D. They both include the direction of motion.

Answers

Answer:

c

Explanation:

In which beaker were the particles moving the most slowly?
O A. Beaker C: 15°C
B. Beaker D: 18°C
C. Beaker B: 9°C
O D. Beaker A: 3°C

Answers

Answer:

It might be wrong but d? i think

Answer:

B. Beaker D: 18°C

Explanation:

Test approved

Which of these actions would increase heat transfer between two objects?

establishing their thermal equilibrium
increasing the area of their contact
using objects with similar specific heats
reducing the time of their contact

Answers

Answer:

b

Explanation:

increasing the area of their contact.

BTS ARMY

Answer: B.) increasing the area of their contact

Explanation: i hope this helps :)

PLEASE HELP ASAP!!
Select the correct answer.

According to this map, which county in Florida is most in need of safe rooms and hurricane ties?




A.

Hillsborough

B.

Jefferson

C.

Palm Beach

D.

Miami-Dade

Answers

Answer:

I think it's Miami-Dade

Explanation:

i hope this helps

Answer:

it is miami-dade!

Explanation:

Explain the different types of energy in a working wind turbine

Answers

Answer:

A wind turbine converts the kinetic energy of the wind into mechanical power.  

The wind moves the turbine and the turbine produce energy.

An arrow that is pulled back by a bow has which type of energy?

Answers

Answer:

Kinetic energy

Explanation:

Kinetic energy is the energy of motion, and the arrow is in motion.

An arrow that is pulled back by a bow has POTENTIAL ENERGY and ready for motion or kinetic energy.

Which type of earthquake waves are responsible for most of the damage caused by an earthquake? Why?
please helppppp its due tomorrow

Answers

Answer:

Surface waves travel along the surface. There are two types of body waves: P-waves travel fastest and through solids, liquids, and gases; S-waves only travel through solids. Surface waves are the slowest, but they do the most damage in an earthquake.

Answer:

surface waves

Explanation:

they have the strongest vibration and can cause the most damage

name one material through which continuous flow of charge can be produced from chemical energy​

Answers

Answer:

Battery.

Explanation:

A battery is a device that stores chemical energy, and converts it to electricity. This is known as electrochemistry and the system that underpins a battery is called an electrochemical cell. A battery can be made up of one or several (like in Volta's original pile) electrochemical cells

While standing at home plate, a batter swung a 2.5kg bat at 2.5 m/s toward an incoming mass. The mass was a 0.4 kg blob of clay, thrown toward the batter at 26 m/s, which stuck the the bat in an inelastic collision. What velocity of the velocity of the bat and blob of clay (which are stuck together) after the collision? Help fast will give brainliest
Show work

Answers

Answer:

5.74 m/s

Explanation:

m1v1+m2v2=(m1+m2)*vf

2.5*2.5+0.4*26=(2.9)vf

16.65=2.9vf

vf=5.74 m/s

32. Increasing the amplitude of a sound wave produces a
sound with
1. lower speed
2. higher pitch
3: shorter wavelength
4. greater loudness

Answers

Answer:

4

Explanation:

because amplitude of a sound wave is related to loudness of the sound, so the higher the amplitude, the louder the sound

hope this helps

A force of 1200N is creating a pressure of 60Pa on a surface. Calculate the area of the surface.

Answers

Answer: 20 squared units

Explanation:

Area = Force / Pressure

A 3500 N is force is applied to a spring that has a spring of constant of k= 14000 N/m. How far from equilibrium will the spring be displaced?

Answers

Answer:

the spring be displaced by 25.0 cm

Explanation:

The computation is shown below:

As we know that

F= -K × x

So,

[tex]x = \frac{-F}{K}[/tex]

Now  

[tex]x = \frac{-3500}{14000} \\\\[/tex]

= -0.250m

= 25.0 cm

Hence, the spring be displaced by 25.0 cm

As Clinton walks he pushes his shoe against the track.
Which of the following best describes the reaction force to Clinton's shoe pushing against the track?
OA. The track pushes back on Clinton's shoe with the same force.
ОВ.
The track pushes in the same direction as Clinton's shoe with the same force.
OC. The track pushes against gravity with the same force.

The track pushes in a different direction with a different force.

Answers

Answer:A:The track pushes back on Clinton's shoe with the same force.

Explanation:According to Newton's third law of motion, for every action force there is an equal and opposite reaction force. In this case, the action force is Clinton's shoe pushing on the track. As this happens, there is an equal and opposite reaction force in which the track pushes back on Clinton's shoe with the same force.

I can fly but have no wings. I can cry but I have no eyes. Wherever I go, darkness follows me. What am I?

Answers

cloud?? thats prob wrong lol

Answer:

a shadow a cloud i dont really know

so by the shape look at this what will the time acceleration speed or velocity be in a beyblade what is the average if the beyblade spins for atleast 45 seconds and the beyblade weighs 55 grams what is the speed or acceleration of the beyblade?

Answers

Answer:

the answer is 1.09 speed

Answer:

2.00

Explanation:

Which of the following describes a reference point?
A. The location of an object before its motion begins
B. The center point of a grid
C. The point at which the direction of motion changes
D. The position of an object after its motion has stopped

Answers

The best answer is A.

Imagine you are looking out a car window and you see a tree. A few seconds later you do not see the tree where it was. You have used the tree as a reference point to know that the car is moving.

who can teach me phsics​

Answers

A physics teacher with a certification

You and your 3 friends are driving down the road. All the wheels go flat at the exact same time, that's not good. You have to use a 2,100 N force to push the car 4 meters to the side of the road. How much work did you do on the car?

Answers

Answer:

Workdone = 8400 Nm

Explanation:

Given the following data;

Force = 2100 N

Distance = 4 meters

To find the work done;

Workdone = force * distance

Workdone = 2100 * 4

Workdone = 8400 Nm

Therefore, the amount of work done on the car is 8400 Newton meters.

Donna shines a flashlight and a laser pointer on a sheet of paper. She holds each device at an equal distance from the paper. How does the light hitting the paper from each device appear different?

The light from the flashlight lights up a larger area of the paper.
The light from the laser pointer lights up a larger area of the paper.
The light from the flashlight magnifies a larger area of the paper.
The light from the laser pointer magnifies a larger area of the paper.

Answers

Answer:

A the light on the flash light lights up a bigger area

I'm pretty sure this is right.

Explanation:

Answer:

a

Explanation:

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