Understanding Momentum

What is the basic equation for momentum?

• Momentum equals mass plus velocity.

• Momentum equals velocity divided by mass.

• Momentum equals mass times velocity.

• Momentum equals mass divided by velocity.

Which of the following units can be used to measure momentum?

• Watts

• Newton-seconds

• Newton-meters

• Joules

How is the direction of momentum determined?

• By the direction of velocity

• By the shape of the object

• By the speed of the object

• By the mass of the object

If a ball is moving upwards at an angle, how can its momentum be described?

• By its y-direction momentum only

• By its x-direction momentum only

• Only by its total momentum

• By both x-direction and y-direction momentum

What is the x-velocity of a ball moving at 10 meters per second at an upward angle of 30 degrees?

• 8.7 meters per second

• 3 meters per second

• 5 meters per second

• 10 meters per second