this question ask for three parts. A.Does the gravitational potential energy of

Question

this question ask for three parts.

A.Does the gravitational potential energy of an object at a height h above Earth’s surface depends on the height h, the path the object took to get to the height, both, or neither?

B. the force associate with strectching or compressing a string is not constant,

but does not depend on the amount of streching/compressing

or

is proportional to the amount of streching/compressing.

C. The amount of energy required to increase the speed of an object with mass by a certain amount (for example, change in speed = 10 m/s).

does not depend on the initial speed of the object.

does depend on the initial speed of the object.

could the first two depending on the situation.

Explanation / Answer

A) gravitational potential energy depends only on the height h and does not depend on the path

B) F = k*x

x is the amount of streching or compression hence the answer is proportional to the amount of streching /compressing.

C) energy required = change in kinetic energy = 0.5*m*(v^2-u^2)

v is the final speed and u is the initial speed

hence the answer is does depend on the initial speed of the object

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