Physics Unit 3 Momentum and Collisions

Ethan is playing soccer and kicks the ball. What is the best definition of the ball's momentum?

• The energy stored in the ball due to its position

• A measure of the ball's mass

• The quantity of motion the ball has, based on mass and velocity

• A push or pull on the ball

Tags

NGSS.HS-PS2-2

Noah and Aiden were playing with marbles. Which sentence correctly describes an elastic collision between their marbles?

• The elastic collision caused the marbles to stick together.

• In an elastic collision, no kinetic energy is lost.

• The elastic collision involved friction and thermal energy.

• Elastic collisions only happen in outer space.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Hannah is pushing a shopping cart at the grocery store. A force is best described as:

• An object in motion

• The weight of an object

• A push or pull that can change an object's motion

• The shape of an object

Tags

NGSS.3-PS2-1

Benjamin and Michael were playing with toy cars. When they crashed the cars into each other and they bounced off, they experienced an ________.

• Inelastic collision

• Energy loss

• Elastic collision

• Frictional interaction

Tags

NGSS.MS-PS2-1

What does it mean if a collision is inelastic?

• The objects bounce off each other perfectly

• The total kinetic energy is conserved

• The objects stick together and kinetic energy is lost

• No energy is transferred during the collision

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which sentence correctly uses the word conserved in a physics context?

• He conserved his money by not buying lunch.

• The total momentum of the system was conserved after the collision.

• She conserved her energy by sleeping.

• The animals were conserved in a shelter.

Tags

NGSS.HS-PS2-2

Sophia and Ethan are working on a science project. They need to understand what a system refers to in physics. What does system refer to in physics?

• A machine that runs on electricity

• A group of organs in a body

• A set of interacting parts being studied

• A team of scientists

Tags

NGSS.HS-PS3-2

In which situation is friction most likely to play a role?

• Two objects collide in a vacuum

• An ice skater glides on a rink

• A spaceship in orbit

• A train moving on a perfectly smooth track in outer space

Choose the best definition of mass.

• The speed of an object

• The amount of matter in an object

• The distance an object travels

• The force acting on an object

Anika was playing soccer and kicked the ball. Which sentence uses the word velocity correctly to describe the ball's motion?

• His velocity increased as he ate lunch.

• Velocity is how hot something is.

• The velocity of the ball included both its speed and direction.

• The velocity stayed the same as the object changed direction.