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1) An object is traveling at a constant velocity of 7 m/s. If the applied force is 800 N, what is the acceleration of the object?
2) An object with a mass of 5 kg is at rest on top of a 2 meter hill. Assuming no friction, what will the object's velocity be once it reaches the bottom of the hill? Round to two decimal places (The answer in m/s)
Thanks! :D

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MathPhys

Answer:

1) 0 m/s²

2) 6.26 m/s

Explanation:

Acceleration is the change in velocity over time. Therefore, an object with constant velocity has no acceleration. For the object going down the hill, its initial gravitational potential energy is converted to kinetic energy.

PE = KE

mgh = ½ mv²

gh = ½ v²

v² = 2gh

v² = 2 (9.8 m/s²) (2 m)

v = 6.26 m/s

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