Kinetic Energy Quiz-2

1. The energy of an object resulting from motion is __________ energy.

Kinetic

Potential

Mechanical

Thermal

About This Quiz

Choose the correct answer from theose given

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2. The unit for kinetic energy is the ___

Watt

Joule

Newton

Volt

3. Which of the following would produce the greatest increase in the kinetic energy of a moving object?

Doubling its mass

Doubling its velocity

Halving its mass

Halving its velocity

4. A rifle can shoot a 4.20-g bullet at a speed of 965 m/s. What is the kinetic energy of the bullet as it leaves the rifle?

1.96×10^6 J

2.03 J

1.96×10^3 J

2.03×10^3 J

KE = 1/2 mv^2

Explanation

KE = 1/2 mv^2

5. A ball traveling at 30 m/s has 900 J of kinetic energy. What is the mass of the ball?

1kg

2kg

9kg

30kg

KE = 1/2 mv2
900 = 1/2 m x 30^2

Explanation

KE = 1/2 mv2
900 = 1/2 m x 30^2

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