Question

Take two alluminium channels of different length ?
​

Answer 1

Answer:

Explanation:

1448.

a) when the balls are about to be released, they are in rest. however they have undergone a change in position, so they have Potential energy.

b) when the ball starts moving down the slope, the ball attains a velocity as it goes down. It also undergoes a change in position.

Therefore at this time there is a shift of potential energy into the kinetic energy.

c) the law of conservation of energy governs the above phenomenon.