Quizizz Recovery: Newton 2

Multiple Choice

Gravity can be defined as the –

• force of attraction between two or more masses.

• friction created when two objects are in contact.

• energy given off by stars due to nuclear reactions.

• path an object follows as it moves through space.

Multiple Choice

The gravitational attraction between two objects would increase if both masses are –

• increased, and the distance between them is increased.

• increased, and the distance between them is decreased.

• decreased, and the distance between them is decreased.

• decreased, and the distance between them is increased.

Multiple Choice

As distance between two objects increase the pull of gravity 

• Increases
• Decreases
• Stays the same

Multiple Choice

What is the definition of "weight"?

• the force in which gravity pulls on an object
• the time it takes to get on a ride 
• the amount of matter in an object
• the size of an object

Multiple Choice

A person would weigh less on on the Moon than on the Earth because . . .

• Moon has more mass, and therefore more gravity
• Moon has less mass, and therefore more gravity
• Moon has more mass, and therefore less gravity
• Moon has less mass and therefore less gravity

Multiple Choice

Momentum is a ____________________ quantity

• science
• scalar
• vector
• energy

Multiple Choice

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

• size and shape

• mass and speed

• mass and veloctiy

• mass and energy

Multiple Choice

If two objects have the same mass, then the faster moving object has ____________ momentum.

• more 
• less
• the same

Multiple Choice

Which of the following images has more momentum?

• Object A
• Object B 
• They are the same

Multiple Choice

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

Multiple Choice

Which scenario would most likely occur when a cue ball strikes a pool ball that is at rest?

• The cue ball will stop making and also be at rest.

• The pool ball will accelerate in the same direction as the cue ball was initially moving.

• The cue ball will bounce back from the pool ball around the same velocity.

• The pool ball will accelerate to a velocity greater then the cue ball moving.

Multiple Choice

While playing pool, the white cue ball strikes the 8 ball. Before the collision, the cue ball's velocity was 10 m/s and the 8 ball was at rest. If both ball's have a mass of 0.15 kg and the cue ball's velocity after the collision is 2 m/s, what is the 8 ball's velocity?

• 2 m/s
• 8 m/s
• -2 m/s
• 1.5 m/s

Multiple Choice

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.

Multiple Choice

Collisions where objects BOUNCE apart.

• inelastic collisions

• elastic collisions

• explosions

• none of these

Multiple Choice

Collision where objects collide, and stick together.

• inelastic collision

• elastic collision

• explosion

• none of these

Multiple Choice

A 2.5 kg ball moving at 5 m/s collides with a 2.5 kg stationary ball in a perfectly elastic collision.  What is the velocity of the second ball after the collision? 

• 5 m/s
• 2.5 m/s
• 10 m/s
• 7.5 m/s

Multiple Choice

What is happening to the ice skater?

• Decreased Angular velocity, decreased rotational inertia

• Decreased Angular velocity, increased rotational inertia

• Increased Angular velocity, increased rotational inertia

• Increased Angular velocity, decreased rotational inertia

Multiple Choice

A person sits on a freely spinning lab stool that has no friction in its axle. When this person extends her arms,

• her moment of inertia increases and her angular speed decreases.
• her moment of inertia decreases and her angular speed increases.
• her moment of inertia increases and her angular speed increases.
• her moment of inertia increases and her angular speed remains the same.