friction

Front

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?

Back

2.2 N s

Front

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? Options: A, B, C, D

Back

D

Front

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?

Back

0.22 kg m/s

Front

Horizontal component of a 45 N force at 65° above horizontal on a 500 kg crate.

Back

19 N

Front

Speed of cart A after spring release (7.0 kg cart, cart B speed = 6.0 m/s)

Back

2.6 m/s

Front

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?

Back

8.0 x 10² kg m/s

Front

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?

Back

3.0 m/s²

Front

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 kg m/s, and the magnitude of the momentum of the red cart before the collision is 3.0 kg m/s. What is the magnitude of the total momentum of the two carts after the collision?

Back

1.0 kg m/s

Front

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

Back

3

Front

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?

Back

18.0 m/s east