Elastic and Inelastic Collisions Review

A collision occurs when ...

• two or more objects hit each other with a force.

• an object in motion stays in motion.

• when an object at rest stays at rest.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Select all the examples of collisions.

• car crash

• baseball bat hitting a baseball

• your fingers pushing the keys on a keyboard

• a car running at a fast speed

Tags

NGSS.HS-PS2-2

NGSS.HS-PS2-3

Inertia is ...

• When two objects hit each other with force.

• A measurement on how easy it will be to stop a moving object.

• The tendency of an object at rest to stay at rest or an object in motion to stay in motion.

An object's inertia depends on ...

• the weight or mass of the object

• mass and velocity

Tags

NGSS.HS-PS2-1

A bat hits a baseball in the ideal physics world. The total momentum _____ after the collision.

• increased

• decreases

• remains constant

• stays at zero

Tags

NGSS.HS-PS2-2

A 60 kg physics student sits in a 5 kg chair. He then stands up at a speed of 2 m/s. Which object has the larger mass?

• the student

• the chair

• neither, they are equal

• neither, they are equal and opposite

Tags

NGSS.MS-PS2-4

A 60 kg physics student sits in a 5 kg chair. He then stands up at a speed of 2 m/s. Which object has the larger final speed?

• the student

• the chair

• neither, they are equal

• neither, they are equal and opposite

Tags

NGSS.HS-PS2-2

When a student runs and kicks a ball, they have applied an ___________ force to move the ball.

• Balanced

• Magnetic

• Spring

• Unbalanced

Tags

NGSS.HS-PS2-1

What law is best described by inertia?

• 1st
• 2nd
• 3rd
• law of conservation of mass

Tags

NGSS.HS-PS2-1

Equal and Opposite

• 1st
• 2nd
• 3rd
• speed 

Tags

NGSS.MS-PS2-1