Physics Forces and Diagrams

Which of the following forces is NOT at work when a crane's cable snaps and a beam crashes down on construction trucks?

• Gravitational force pulling the beam downward.

• Tension force in the cable before it snaps.

• Magnetic force between the beam and the trucks.

• Impact force when the beam hits the trucks.

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NGSS.HS-PS2-4

Which of the following forces would be present in a free body diagram of a roller skater accelerating to the right toward a dog?

• Gravitational force downward

• Normal force upward

• Frictional force to the left

• Applied force to the right

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NGSS.HS-PS2-1

Which of the following situations could be represented by this free body diagram? Label the force vectors appropriately.

• A book being pushed on a table with gravitational and normal forces.

• A car accelerating on a flat road with friction and engine forces.

• A pendulum swinging with tension and gravitational forces.

• A satellite orbiting Earth with gravitational and centripetal forces.

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NGSS.HS-PS2-1

Calculate the weight of a 995 kg car in Newtons.

• 9,750 N

• 9,850 N

• 9,950 N

• 10,050 N

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NGSS.HS-PS2-1

NGSS.HS-PS2-4

If the weight of a 55.0 kg astronaut on Pluto is 34.0 N, what is the strength of gravity on that planet?

• 0.62 m/s²

• 0.55 m/s²

• 0.68 m/s²

• 0.50 m/s²

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NGSS.HS-PS2-1

NGSS.HS-PS2-4

A space shuttle has a weight of 4,500,000 pounds on Earth, what is its mass? (don’t forget to convert to newtons first!)

• 204,117 kg

• 450,000 kg

• 2,041,170 kg

• 45,000 kg

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NGSS.HS-PS2-1

The measurement of the force of gravity on an object.

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NGSS.HS-PS2-4

The unit of force commonly used in the U.S.

The force that acts between positive and negative charges.

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NGSS.HS-PS2-4

The metric unit of force.