Forces Quiz

If you take a trip from Earth to the Moon, which statement below is correct?

• Your mass and weight both decrease.

• Your mass stays the same and your weight decreases.

• Your mass decreases and your weight stays the same.

• Your mass increases and your weight decreases.

A person weighs 150 lbs. What is this weight in newtons? (1 pound = 4.448 N)

Name all forces acting on the dumbbell with their directions.

Tags

NGSS.MS-PS2-4

According to the first law, an object at rest …

• accelerates inversely proportional to its mass.

• remains at rest because it has zero acceleration.

• remains at rest unless acted upon by a net force.

• remains at rest due to the constant presence of friction.

According to the first law, an object in motion remains in motion . . .

• forever.

• at the same speed.

• with acceleration inversely proportional to its mass.

• at the same speed and direction unless acted upon by a net force.

A puck slides across an ice rink. The weight and normal force on the puck cancel out, but the puck gradually slows to a stop. Why doesn’t the puck obey the first law, staying in motion at constant velocity forever?

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-5

A net force of 10 N acts on a cart on a straight track. Label each statement below as true, possibly true, or false.

• The cart moves with constant velocity.

• The cart moves with constant acceleration.

• The cart speeds up.

• The cart slows down.

Tags

NGSS.MS-PS2-2

A 10-kg object is subject to a net force of 25 N. What is the acceleration of the object in m/s²?

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NGSS.MS-PS2-2

What is the minimum force required to increase the speed of a 1,000 kg vehicle by 10 m/s in 3 seconds?

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NGSS.MS-PS2-2

A 2.0 kg cart on a frictionless track collides with a 1.0 kg cart at rest. During the collision, the 2.0 kg cart exerts a 10 N force on the 1.0 kg cart. What is the force on the 2.0 kg cart during the collision?

Tags

NGSS.MS-PS2-1