Law of Conservation of Linear Momentum and Impulse

According to the Law of Conservation of Momentum, when two objects collide:

• both objects lose momentum.

• both objects gain momentum

• momentum is neither lost nor gained.

• momentum is always lost or gainer.

Tags

NGSS.HS-PS2-2

The law of conservation of momentum states that the total amount of momentum of a group of objects does not change unless ___________.

• outside forces acts on the objects

• the objects are not moving

• the objects have different masses

• the objects exert forces on their surroundings

Tags

NGSS.HS-PS2-2

The Law of Conservation of Momentum states the following:

• A force exerted over a time interval that causes a change in an object’s momentum

• The product of an object’s mass and its velocity

• A collision in which the total momentum and the total kinetic energy remain constant

• The total momentum of all objects interacting with one another remains constant, regardless of the nature of the forces between the objects.

Tags

NGSS.HS-PS2-2

The total momentum before a collision is _________ the total momentum after a collision.

• equal to

• less than

• more than

• It depends on the type of collision

Tags

NGSS.HS-PS2-2

A 50 kg ball rolls down the street at 5 m/s. Calculate the momentum of the ball. 

• 55 kg*m/s

• 100 kg*m/s

• 250 kg*m/s

• 500 kg*m/s

Tags

NGSS.HS-PS2-2

A 9300 kg railroad car traveling at a velocity of 5 m/s strikes a second boxcar that weighs 5000 kg at rest. At what speed will the second boxcar move?

• 18.6 m/s

• 9.3 m/s

• 7.5 m/s

• 1.86 m/s

Tags

NGSS.HS-PS2-2

A runner has a momentum of 670 kg m/s and is travelling at a velocity of 9 m/s. What is his mass?

• 6030 kg

• 0,0134 kg

• 74,4 kg

• 80 kg

Tags

NGSS.HS-PS2-2

A boy kicks a football with a force of 20 N, the time the force acts for is 0.3 s.

Calculate the impulse on the ball.

• 1 N·s

• 6 N·s

• None of these

• 66 N·s

Tags

NGSS.HS-PS2-1

The shaded area of the graph represents

• Impulse

• Force

• Torque

• Displacement

Tags

NGSS.HS-PS2-1

Which of the following best describes the Law of Conservation of Linear Momentum?

• The total linear momentum of a closed system is constant unless acted upon by an external force.

• The total linear momentum of a system increases with time.

• The linear momentum of an object is always conserved in any interaction.

• The linear momentum of a system is always zero.

Tags

NGSS.HS-PS2-2