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Question

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 10 kg object has higher kinetic energy.
The 10 kg object has higher 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 objects have equal kinetic energy.
The objects have equal kinetic energy.

Answer 1

The formula to calculate kinetic energy is KE = 1/2mv^2, where m is the mass of the object and v is its velocity.

For the 5 kg object with a speed of 10 m/s, the kinetic energy would be KE = 1/2 * 5 kg * (10 m/s)^2 = 250 J.

For the 10 kg object with a speed of 5 m/s, the kinetic energy would be KE = 1/2 * 10 kg * (5 m/s)^2 = 125 J.

Therefore, the 5 kg object has higher kinetic energy, so the correct answer is:

The 5 kg object has higher kinetic energy.