Standard Science Primary 6 Energy

Two identical balls, P and Q, are rolling on the floor. Ball P is rolling faster than Ball Q. Which ball has more kinetic energy?

A Ball Q, because it is slower.
B Both have the same energy because they are identical.
C Ball P, because it has more mass.
D Ball P, because it is moving at a higher speed.
Show Worked Solution

Worked Solution

Step 1: Recall that kinetic energy is determined by mass and speed. Step 2: Since the balls are identical, mass is constant. Step 3: Ball P is faster, so it possesses more kinetic energy.

Correct answer: Ball P, because it is moving at a higher speed.

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