Standard Science Primary 6 Energy

A ball is rolling down a slope. As it moves from the top to the bottom, what happens to its Gravitational Potential Energy (GPE) and Kinetic Energy (KE)?

A Both GPE and KE decrease
B GPE decreases, KE increases
C Both GPE and KE increase
D GPE increases, KE decreases
Show Worked Solution

Worked Solution

Step 1: GPE depends on the height of the object. Step 2: As the ball rolls down, its height decreases, so GPE decreases. Step 3: As it rolls down, it gains speed, so KE increases. Step 4: GPE is converted into KE.

Correct answer: GPE decreases, KE increases

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