A spring toy is moving down steps, What happens to the energy of the toy? A. The toy gains energy as it moves.
B. The toy loses energy to the steps.
C. The amount and type of energy of the toy stays the same.
D. The amount of energy the toy has stays the same, but it changes form.

Option (d) is correct.

Explanation:

When a spring toy is at the maximum point, it have maximum potential energy because it is given by :

PE = mgh where h is height and g is acceleration due to gravity

When it moves down steps, its potential energy decreases and kinetic energy increases and it is given by :

KE=1/2 mv^2 where v is velocity of the object

It means when it is moves down step, the potential energy gets converted to kinetic energy. So, the amount of energy the toy has stays the same, but it changes form. Hence, the correct option is (d).

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