Question

a toy car is traveling with a velocity of 4 m/s and has a mass of 120 g. the car has energy.

Explanation:

Step1: Convert mass to kg

Since \(1\space kg = 1000\space g\), then \(m=120\space g=\frac{120}{1000}\space kg = 0.12\space kg\)

Step2: Use kinetic energy formula

The formula for kinetic energy is \(K.E.=\frac{1}{2}mv^{2}\). Substitute \(m = 0.12\space kg\) and \(v = 4\space m/s\) into the formula:

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Answer:

The car has kinetic energy.