Laws of Motion

What keeps the coin from sliding to the right when the card is pulled out quickly?

• friction

• gravity

• inertia

• acceleration

What force allows us to hold things in our hands like the picture shown?

• gravity

• inertia

• friction

• acceleration

A 10 kg ball is rolling across the floor and slowing down at -5.0 m/s². What is the force of friction acting on the ball?

• 2N

• 0.5 N

• 9.8 N

• 50 N

Which object has the greatest inertia?

• an aircraft carrier in the middle of the ocean at rest

• a 2 kg chunk of an meteoroid moving through Earth's atmosphere at 20 miles per second

• A car moving at 65 mph

How would the mass and weight of an object on Earth compare to its mass and weight on the moon?

• Both would be more on the moon

• The mass would be less on the moon but the weight would be the same

• Both would be less on the moon

• The mass would be the same but the weight would be less on the moon

An unbalanced force of 6N acts on a 6-kg mass. The acceleration of the mass will be

• 2 m/s²

• 0.5 m/s²

• 2N

• 1m/s²

If you apply a force to an object and it does not move you know that

• The forces on the object are unbalanced

• There is another force of equal magnitude acting on the object in the opposite direction.

• The force the object is applying to you is more than the force you apply to it

• The force of friction is higher than the force you are applying

Which of the following represents the UNITS of force?

• w

• kg

• m/s²

Which would have the greatest acceleration if the same unbalanced force was applied to it?

• 1 kg

• 2 kg

• 4 kg

• 8 kg

A force of 50N causes an object to accelerate at 10 m/s². What is the mass of the object?

• 500 kg

• 60 kg

• 5 kg

• 500 kg