Physics High School


3. Bamey is walking with all his good friends. If he began walking away from Lucy 12 seconds ago at an average speed of 1.5 m/s and is now 25 m from Lucy, the how far from her was he when he began walking?

Answers

Answer 1

Answer:

7 meters away

Explanation:

12 x 1.5 = 18

25 - 18 = 7

Related Questions

You are doing chores to earn your allowance. For each chore you do, you earn $3. What is the independent variable?
A. The amount of allowance ($3)
B. The amount of chores you do
C. The amount of allowance and the amount of chores

Answers

The independent variable is b the amount of chores you do

The net force on a golf cart is 390 N north. If the cart has a total mass of 270 kg,

what are the magnitude and direction of the cart’s acceleration?

Answers

Answer:

1.4m/s^2 is the acceleration

Explanation:

magnitude and direction were already given . Using F=ma , acceleration is found .

The magnitude and direction of the cart's acceleration are 1.44 m/s² North.

To solve the given problem, we make use of newton's fundamental equation.

⇒ Newton's equation:

F = ma...................... Equation

⇒ Where:

F = Net force on the golf cartm = mass of the carta = acceleration of the cart.

⇒ make "a" the subject of the equation

   a = F/m............... Equation 2

From the question,

⇒ Given:

F = 390 Nm = 270 kg

⇒ Substitute these values into equation 2

a = 390/270a = 1.44 m/s² alone the direction of the force (North)

Hence, the magnitude and direction of the cart's acceleration are 1.44 m/s² North.

Learn more about acceleration here: https://brainly.com/question/2473092

What is the new kinetic energy of the 1900 kg ship on the right moving at 4 m/s?

Answers

Answer:

soi nuevo

Explanation:me  regalan puntos

Answer:

15,200J

Explanation:

The equation is 1/2 x m x v², where m= mass and v= velocity.

A 70kg man runs at a pace of 4 m/s and a 50g meteor travels at 2 km/s. Which has the most kinetic energy?.

Answers

Answer:

the 70kg man

Explanation:

because he has more weight and is moving faster

Are there differences in how the size/radius changes over time, when you compare stars with different initial masses?

Answers

information panel allows comparisons between the radius, surface temperature, luminosity and mass of ... Describe how the Sun changes over its lifetime. ... C. ​ Follow the evolution for five stars with different masses.

Hi- I'm giving Brainliest for the best explanation to this.
If you were in a falling elevator, would you be able to jump up at the last second in order to survive? Please explain. I am so confizzled!
Thank you!

Answers

Answer:

yes it is possible, you have to lay down flat on your back

brainliest pweaseee

Answer:

Yes (and no)

Explanation:

Hey! This according to my theory is possible, the g-force of an object or "elevator" (in your explanation) is accelerating as it's gravitational pull is getting stronger. So it would but wouldn't be possible in a small elevator, because you-know it's an elevator (and of course you would bump your head, ouch!) ; p !

But if you had free or spare space to use, then you can jump upwards at the last second to cancel out the gravitational pull as if you actually (or originally) jumped from this height. But the gravitational pull may be too strong for those of humans, if the person acquiring and accelerating in G-Force doesn't have good leg muscle then he may be pulled along with the object by the gravitation.

I hope this helped! Pls Brainliest my answer! It would mean and help a lot! ; )

Ariel and Jackson are playing miniature golf. Ariel's ball rolls into a long, straight upward incline with a speed of 3.054 m/s and accelerates at -0.7762 m/s/s for 1.51 seconds until it reaches the top of the incline and then continues along an elevated section. Determine the length of the incline.

Answers

Answer:

The length is [tex]s = 3.73 \ m[/tex]

Explanation:

From the question we are told that

  The speed is  [tex]v = 3.054 \ m/s[/tex]

  The acceleration [tex]a = -0.7762 m/s^2[/tex]

   The time taken is  [tex]t = 1.51 \ s[/tex]

     

Generally from kinematics equation the length of the inclined plane is mathematically represented as

         [tex]s =ut + \frac{1}{2} * at^2[/tex]

=>      [tex]s = 3.054 *1.51 + \frac{1}{2} * (-0.7762) *(1.51)^2[/tex]

=>   [tex]s = 3.73 \ m[/tex]

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