Work & Energy Unit Test Practice Questions

Which of the following is the SI unit for work?

• Newton (N)

• Meters per second squared (m/s²)

• Kilowatt (kW)

• Joule (J)

In which of the following situations is work being done on a crate of bananas?

• A crate of bananas is pushed with a force, but it is not enough to move it.

• A crate of bananas moves across the floor at a constant velocity after being pushed.

• A crate of bananas accelerates as it is pushed by a person.

• A crate of bananas sits at rest on the floor.

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NGSS.HS-PS2-1

A woman at the gym lifts a 40-kg barbell 2.5 meters vertically. How much work did she do on the barbell?

• 16 Joules

• 100 Joules

• 367.5 Joules

• 980 Joules

Which of the following is the SI unit for energy?

• Newton (N)

• Meters per second squared (m/s²)

• Joule (J)

• Newton meter (N·m)

A bicycle with a mass of 15 kg is moving with a kinetic energy of 100 Joules. Determine its velocity.

• 15 m/s

• 2,000 m/s

• 3.65 m/s

• 13.3 m/s

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NGSS.HS-PS3-1

NGSS.HS-PS3-2

A construction worker lifts a toolbox with a mass of 2.5 kg to the top of a building, 30 meters above the ground. Determine the gravitational potential energy of the toolbox at this height.

• 75 Joules

• 735 Joules

• 14.7 Joules

• 30 Joules

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NGSS.HS-PS3-2

A car with a mass of 1,040 kg is traveling at 20 m/s when friction causes it to slow down to 15 m/s. What is the car’s change in kinetic energy?

• -91,000 J

• 30,800 J

• -3,850 J

• 462,000 J

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NGSS.HS-PS3-1

A child pushes a shopping cart sitting at rest with a force of 30 N over a distance of 3 meters along a smooth floor. Find the resulting velocity of the 25-kg shopping cart.

• 2.68m/s

• 7.2 m/s

• 2250 m/s

• 270 m/s

Tags

NGSS.HS-PS2-1

A person pushes a crate of mangos across the floor with a constant force of 10 N. If the crate moves a distance of 1 meters, how much work is done by the person on the crate of mangos?

• 1 J

• 10 J

• 100 J

• 1,000 J

David throws a baseball upward with an initial speed of 13 m/s. If the baseball has a mass of 0.5 kg, how high will it go from its initial position?

• 4.95 m

• 8.62 m

• 7.45 m

• 8.25 m

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

NGSS.HS-PS3-1