liner momentum (AP Physics)

A missile explodes into two pieces. One piece has a momentum of 12.5 kg ∙ m/s to the left. What’s the momentum of the second piece?

• 12 kg ∙ m/s to the right

• 12 kg ∙ m/s to the left

• 25 kg ∙ m/s to the right

• 12.5 kg ∙ m/s to the right

• 12.5 kg ∙ m/s to the left

A truck of mass 500 kg and moving at an unknown speed collides with a stationary car of mass 1000 kg, and the two vehicles lock together on impact. The combined velocity of the car and truck are moving at a speed of 20 m/s, the velocity of the truck before the collision is ___ m/s.

• 40

• 60

• 80

• 100

• 120

A 10 kg clay ball with a speed of 10 m/s to the east, explodes into two pieces. One piece of mass 5 kg has a speed of 5 to the west. The velocity of the second piece is ___ m/s.

• 5

• 10

• 15

• 20

• 25

A moving car of mass 500 kg collides with a stationary truck of mass 1500 kg, and the two vehicles lock together on impact. The combined velocity of the car and truck after the collision is 20 m/s. The velocity of the car before the collision is ____m/s.

• 20

• 80

• 40

• 10

• 15

A red car of mass 15.5 kg is moving at 10 m/s and collides with another 4.5 kg stationary blue car. After the collision, the red car continues in the same direction with a velocity of 2 m/s. Neglecting friction, the momentum of the blue car after the collision is ___ kg ∙ m/s .

• 122 kg ∙ m/s

• 31 kg ∙ m/s

• 155 kg ∙ m/s

• 120.8 kg ∙ m/s

• 124.6 kg ∙ m/s

A white ball of mass 4 kg is moving at 8 m/s and collides with another 2 kg stationary green ball. After the collision, the green ball starts moving in the same direction of the white ball with a velocity of 5 m/s. Neglecting friction, the momentum of the white ball after the collision is ___ kg m/s.

• 9

• 10

• 11

• 22

• 13

A white pool ball of mass 0.60 kg moving at 12 m/s collides with a 0.2 kg red pool ball initially at rest. After the collision, the white pool ball continues in the same direction with a velocity of 6.0 m/s. Neglecting friction, the momentum of the red pool ball after the collision is ______kg∙m/s.

• 3.6

• 4.5

• 6

• 1.5

• 2.5

A 10 kg clay ball with a speed of 10 m/s to the east, explodes into two pieces. One piece of mass 5 kg has a speed of 5 to the west. The momentum of the second piece is ___ kg?m/s.

• 75

• 100

• 125

• 150

• 225

A 2400 kg truck moving at 25 m/s and collides with a 1000 kg car moving in the opposite direction at -15 m/s. After the collision, the truck continues moving in the same direction at 12 m/s. Neglecting friction, the velocity of the car after the collision is ___ m/s

• 16.2

• -85

• 1620

• -16.2

• 1.75

A white pool ball of mass 0.5 kg moving at 10 m/s collides with a 0.4 kg red pool ball initially at rest. After the collision, the white pool ball continues in the same direction with a velocity of 1.1 m/s. Neglecting friction, the velocity of the red ball after the collision is _____m/s. (Round to the nearest tenth) .

• 1.6

• 5.3

• 9.1

• 0.5

• 11.1