Momentum and Collisions

Newton's 3rd Law: When a student on a skateboarder applies a force of 20 Newton to 'push' the ball in a positive direction, what does the student experience?

• A positive (+) force of the same magnitude

• A negative (-) force of equal magnitude

• No force at all, only the ball experiences the force

• A force that is smaller than the 'push' do to being more massive

Tags

NGSS.HS-PS2-1

Newton's 3rd Law: When a student (40 kg) on a skateboard applies a force to accelerate a medicine ball (5kg) to the right, the force acting on the student is:

• A much smaller force

• A much larger force

• Exactly the same force applied to the ball

• No answer is correct

Tags

NGSS.HS-PS2-1

The momentum of an object depends upon the object's ___________&_____________.

• size and shape

• mass and veloctiy

• mass and energy

Tags

NGSS.HS-PS2-2

You have THREE different objects with different masses traveling at different velocities. Which has the greatest momentum?

Object A: really massive traveling slowly

Object B: low mass traveling really fast

Object C: a medium mass traveling at a medium speed

• Object A has the greatest momentum

• Object B has the greatest momentum

• Object C has the greatest momentum

• We cannot say which one has the most momentum without knowing the mass and velocity

Tags

NGSS.HS-PS2-2

When comparing the momentum of moving objects, which of the following is correct?

Object A: 10 kg traveling at +8 m/s

Object B: 8 kg traveling at -10 m/s

Object C: 5 kg traveling at +20 m/s

• Object A has the greatest momentum

• The more massive object has the greatest momentum

• Object C has the greatest momentum

• The object traveling the fastest will ALWAYS have the greatest momentum

Tags

NGSS.HS-PS2-2

When comparing the momentum of moving objects, which of the following is correct?

Object A: 10 kg traveling at +8 m/s

Object B: 8 kg traveling at -10 m/s

Object C: 5 kg traveling at +20 m/s

• Momentum is vector and requires direction

• Objects A and C have + momentum

• Object B has -80 kg m/s of momentum

• All answers are true

Tags

NGSS.HS-PS2-2

Two billiard balls collide. Identify the type of collision.

• elastic

• perfectly elastic

• inelastic

• perfectly inelastic

Tags

NGSS.HS-PS2-2

In a two-body collision,

• momentum is always conserved

• kinetic energy is always conserved

• neither momentum nor kinetic energy is conserved

• both momentum and kinetic energy are always conserved

Tags

NGSS.HS-PS2-2

This picture is an example of ____________

• Elastic Collision
• Inelastic collision

Tags

NGSS.HS-PS2-2

NGSS.HS-PS2-3

This is an example of what kind of collision?

• Elastic
• Inelastic

Tags

NGSS.HS-PS2-2