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beks73 [17]
3 years ago
6

A ball is thrown straight up from point A, reaches a maximum height at point B, and then falls back to point C. Which of the fol

lowing is true about the ball’s velocity and acceleration the highest point B

Physics
1 answer:
ratelena [41]3 years ago
8 0
PE.....................
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Block A with mass mA=4.6 kg lies on a frictionless incline plane. It is connected by a massless rope over a frictionless, massle
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Answer:

Check the explanation

Explanation:

In calculate kinetic energy, write out a formula whereby the kinetic energy will be equal to 0.5 times mass times velocity squared. include in the value for the object mass, then the velocity with which it is moving.

Kindly check the attached image below to get the step by step explanation to the question above.

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3 years ago
A mechanic pushes a 2.30 ✕ 103-kg car from rest to a speed of v, doing 4,800 J of work in the process. During this time, the car
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The horizontal force applied is  160 N while the velocity is  2.03 m/s.

<h3>What is the speed of the car?</h3>

The work done by the car is obtained as the product of the force and the distance;

W = F x

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x = 30.0 m

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F = 4,800 J/30.0 m

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