Newton's Laws

According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will

• remain in motion.
• eventually come to a stop.
• change its momentum.
• accelerate.

A person steps out of the boat and onto the dock.  As the person moves forward onto the dock, the boat moves backward.  Which statement best describes the backward motion of the boat as the person steps forward?

• For every action there is an equal and opposite reaction.
• Every mass exerts a force on every other mass.
• An object at rest tends to stay at rest.
• Friction opposes the motion of an object.

Tags

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What is the definition of "weight"?

• the force in which gravity pulls on an object
• the time it takes to get on a ride 
• the amount of matter in an object
• the size of an object

Tags

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An object will not have any inertia if it is __________?

• Accelerating
• Moving in a circle
• In space
• … Nonsense! All objects have inertia

 267.5 N unbalanced force applied to push a stuffed chair across the room, causing an acceleration of 4.2 m/s2. What is the mass of the chair?

• 26.75 kg
• 63.69 kg 
• 263.3 kg 
• 1123.5 kg

Tags

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Which law is best represented in the image above?

• 1st

• 2nd

• 3rd

Which law is best represented in the image above?

• 1st

• 2nd

• 3rd

Which law is best represented in the image above?

• 1st

• 2nd

• 3rd

Fast-moving objects always have more inertia than slow-moving objects.

• True

• False

What type of force is occurring in the image above?

• Balanced

• Unbalanced