Physics - Friction and Momentum: Review Game

A golf club hits a stationary 0.050-kilogram golf ball with an average force of 5.0 × 10³ newtons, accelerating the ball to a speed of 44 meters per second. What is the magnitude of the impulse imparted to the ball by the golf club?

• 2.2 N s

• 880 N s

• 1.1 x 10⁴ N s

• 2.2 x 10⁵ N s

The diagram below represents a box sliding down an incline at constant velocity. Which arrow represents the direction of the frictional force acting on the box?

• A

• B

• C

• D

A 0.500-kilogram cart traveling to the right on a horizontal, frictionless surface at 2.20 meters per second collides head on with a 0.800-kilogram cart moving to the left at 1.10 meters per second. What is the magnitude of the total momentum of the two-cart system after the collision?

• 0.22 kg m/s

• 0.39 kg m/s

• 1.98 kg m/s

• 4.29 kg m/s

As shown in the diagram below, a rope attached to a 500.-kilogram crate is used to exert a force of 45 newtons at an angle of 65 degrees above the horizontal. The horizontal component of the force acting on the crate is

• 19 N

• 41 N

• 210 N

• 450 N

A 7.0-kilogram cart, A, and a 3.0-kilogram cart, B, are initially held together at rest on a horizontal, frictionless surface. When a compressed spring attached to one of the carts is released, the carts are pushed apart. After the spring is released, the speed of cart B is 6.0 meters per second, as represented in the diagram below.

• 14 m/s

• 6.0 m/s

• 3.0 m/s

• 2.6 m/s

A cannonball with a mass of 1.0 kilogram is fired horizontally from a 500.-kilogram cannon, initially at rest, on a horizontal, frictionless surface. The cannonball is acted on by an average force of 8.0 × 10³ newtons for 1.0 × 10⁻¹ second. What is the magnitude of the change in momentum of the cannonball during firing?

• 0 kg m/s

• 8.0 x 10² kg m/s

• 8.0 x 10³ kg m/s

• 8.0 x 10⁴ kg m/s

A constant eastward horizontal force of 70. newtons is applied to a 20.-kilogram crate moving toward the east on a level floor. If the frictional force on the crate has a magnitude of 10. newtons, what is the magnitude of the crate’s acceleration?

• 0.50 m/s²

• 3.5 m/s²

• 3.0 m/s²

• 4.0 m/s²

A blue lab cart is traveling west on a track when it collides with and sticks to a red lab cart traveling east. The magnitude of the momentum of the blue cart before the collision is 2.0 kilogram • meters per second, and the magnitude of the momentum of the red cart before the collision is 3.0 kilogram • meters per second. The magnitude of the total momentum of the two carts after the collision is

• 1.0 kg m/s

• 2.0 kg m/s

• 3.0 kg m/s

• 5.0 kg m/s

What number was I thinking of when I made this question?

• 1

• 2

• 3

• 4

A 1000.–kilogram car traveling 20.0 meters per second east experiences an impulse of 2000. newton • seconds west. What is the final velocity of the car after the impulse has been applied?

• 18.0 m/s east

• 19.5 m/s east

• 20.5 m/s west

• 22.0 m/s west