Quiz 3b (11.04.2020)

Question 1

____is a property of moving things that means inertia is in motion, more specifically, mass of an object multiplied by its velocity

Answer 1

momentum

Question 2

momentum =

Answer 2

mass times velocity

Question 3

A moving boulder has ___ momentum than a stone rolling at the same speed

Answer 3

more

Question 4

A fast boulder has ___ momentum than a slow boulder

Answer 4

more

Question 5

A boulder at rest has ____ momentum

Answer 5

no

Question 6

A moving object has ____, ___, and ____

Answer 6

momentum, energy, speed

Question 7

When the speed of an object is doubled, its momentum ___

Answer 7

doubles

Question 8

Impulse is the product of ____ and ___

Answer 8

force; time

Question 9

A brief force applied over a short time interval produces a ___ change in momentum than the same force applied over a longer time interval

Answer 9

smaller

Question 10

If you push with the same force for twice the time, you impart ____ and produce ____

Answer 10

twice the impulse; twice the change in momentum

Question 11

The greater the impulse exerted on something, the greater the ____.

Answer 11

change in momentum

Question 12

To increase momentum, apply the greatest force for ___ and you __.

Answer 12

as long as possible; extend the time of contact

Question 13

Extension of hitting time ___.

Answer 13

reduces the force

Question 14

Impulses are generally ___ when objects bounce

Answer 14

greater

Question 15

What is the law of conservation of momentum?

Answer 15

In the absence of an external force, the momentum of a system remains unchanged

Question 16

For all collisions in the absence of external forces, ___

Answer 16

net momentum before collision equals net momentum after collision

Question 17

____ occurs when colliding objects rebound without lasting deformation or any generation of heat

Answer 17

Elastic collision

Question 18

___ occurs when colliding objects result in deformation and/or the generation of heat

Answer 18

Inelastic collision