Newton's Laws, Friction & Momentum Quiz

_________ are forces that produce a nonzero net force, which changes an object's motion. Choose the best answer.

• Balanced Forces

• Unbalanced Forces

• Same Forces

• Equal Forces

What is the formula for momentum?

• p=mv

• m=mv

• p=m/v

• m=p/v

It requires less force to pull a suitcase that is empty than one that is completely full. Which of Newton's Laws does this demonstrate?

• 1st

• 2nd

• 3rd

Which of Newton's Laws uses the formula F=ma?

• 1st

• 2nd

• 3rd

___________ are two forces acting in opposite directions on an object, and equal in size. Choose the best answer.

• Balanced Forces

• Unbalanced Forces

• Cancelled Forces

• Same Forces

Which force always works in the opposite direction to motion?

• Frictional force

• Gravitational force

• Electric force

• Magnetic force

Which of Newton's laws is also called the Law of Inertia?

• 1st

• 2nd

• 3rd

_________ is the tendency of an object to resist a change in motion.

• Inertia

• Force

• Momentum

• Gravity

Using the p=mv formula, calculate the MOMENTUM of a 5 kg bird flying south at 20 m/s.

• 100 kg⋅m/s

• 25 kg⋅m/s

• 0.25 kg⋅m/s

• 4 kg⋅m/s

Calculate the momentum of a 5 kg bowling ball moving at 11 m/s down the alley. (p=mv)

• 55 kg⋅m/s

• 16 kg⋅m/s

• 0.45 kg⋅m/s

• 2.2 kg⋅m/s