Force Test Part A

A group of students is playing tug-of-war. The students on both sides of the rope are pulling with equal force so

that the rope is not moving. This is an example of

• unbalanced forces

• balanced forces

• acceleration

• displacement

A firefighter feels the hose pushing backwards onto him as he uses it to put out a fire. What is the most likely cause of this?

• The hose material is very elastic

• Since the hose is at rest, it tends to stay at rest

• The force exerted on the water equals the mass of the water times its acceleration

• The escaping water exerts an equal and opposite force on the hose.

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If the same force is applied to each of the balls pictured, which one will have the LEAST acceleration?

• Ping pong ball

• Tennis Ball

• Baseball

• Bowling Ball

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Which of the following is measured in Newtons?

• Weight

• Momentum

• Mass

• Acceleration

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The upward force on an object falling through the air is ____

• Air resistance

• Momentum

• Inertia

• Gravity

The relationship among mass, force, and acceleration is explained by ___

• Law of Conservation of Momentum

• Newton's 2nd Law of Motion

• Newton's 1st Law of Motion

• Newton's 3rd Law of Motion

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According to Newton's laws, for any object, the greater the force that's applied to it, the greater its ___ will be.

• acceleration

• inertia

• gravity

• size

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The size of the gravitational force between two objects depends on their _____.

• Frictional forces

• inertia

• masses and the distance between them

• speed and direction

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An astronaut is planning a trip to a newly-discovered planet. According to the Law of Universal Gravitation, the astronaut's weight on the new planet will be greater than his weight on Earth if:

• the new planet has less gravity than Earth

• the new planet has the same gravity as Earth

• the new planet has more gravity than Earth

• the gravity of the planet doesn't matter. Weight is the same everywhere in the universe.

"To every action there is an equal and opposite reaction" describes which law?

• Law of Conservation of Momentum

• Newton's 1st Law of Motion

• Newton's 2nd Law of Motion

• Newton's 3rd Law of Motion

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