Question

As shown below, an object with a mass of 5 kg is moving at a speed of 10 m/s. Another object with a mass of 10 kg is moving at a speed of 5 m/s.



Which of the objects has higher kinetic energy?

(1 point)
Responses

The objects have equal kinetic energy.
The objects have equal kinetic energy.

The 5 kg object has higher kinetic energy.
The 5 kg object has higher kinetic energy.

Both objects have zero kinetic energy.
Both objects have zero kinetic energy.

The 10 kg object has higher kinetic energy.
The 10 kg object has higher kinetic energy.
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Answer 1

Kinetic energy = 1/2 m v^2.

For 5 kg at 10 m/s: KE = 0.5·5·10^2 = 250 J.
For 10 kg at 5 m/s: KE = 0.5·10·5^2 = 125 J.

So the 5 kg object has higher kinetic energy.