L

Question 1

What does the formula | Fnet = △p / △t |

Answer 1

Net force from momentum and time

Question 2

What does the formula j = Favg△t = △p find?

Answer 2

Impulse from average force and time, aka change in momentum

Question 3

What are the units of impulse?

Answer 3

kg • m / s

Question 4

What does the vcm formula find

Answer 4

Velocity of the center of mass from sum of momentums and sum of masses.

Question 5

What is conserved in an inelastic collision?

Answer 5

Momentum only

Question 6

What makes perfectly inelastic collisions different than inelastic collisions?

Answer 6

Perfectly inelastic collisions stick together after a collision.

Question 7

What makes elastic collisions different than inelastic collisions?

Answer 7

Elastic collisions do not deform the object in the collision.

Question 8

What does the slope of the momentum vs time graph tell us?

Answer 8

Force

Question 9

What does the area under the force vs time graph tell us?

Answer 9

Impulse or change in momentum

Question 10

Place each of the seven measurements under either scalar and vectors.

Answer 10

SCALARS: Distance, Speed, Time, Mass, Work, Energy, Power

VECTORS: Acceleration, Displacement, Position, Velocity, Force, Momentum, Impulse

Question 11

What does the conservation of momentum say?

Answer 11

In the absence of external forces, the total momentum is conserved.

Question 12

What is conserved in a perfectly inelastic collision?

Answer 12

Momentum only

Question 13

What is conserved in an elastic collision?

Answer 13

Energy and momentum

Question 14

What are the SI units for Length?

Answer 14

Meters

Question 15

What are the SI units for Time?

Answer 15

Seconds

Question 16

What are the SI units for Mass?

Answer 16

Kilograms

Question 17

What is the formula for average velocity?

Answer 17

v = △x / △t

Question 18

What does the slope of a graph tell us?

Answer 18

△y units / △x units

Question 19

What is constant in all inertial reference frames?

Answer 19

Acceleration

Question 20

What does the area under the graph of velocity time tell us?

Answer 20

Displacement = Change in position

Question 21

What does the slope of the position time graph tell us?

Answer 21

Velocity

Question 22

What does the slope of the velocity time graph tell us?

Answer 22

Acceleration

Question 23

What does mass measure?

Answer 23

An object’s resistance to change in motion

Question 24

Newton’s Second Law gives us this formula, what is another way to use this formula?

Answer 24

F = ma

Question 25

What is the formula for displacement?

Answer 25

Δx = x - x₀

Question 26

What is the formula for average acceleration?

Answer 26

a = △v / △t

Question 27

What does area under a graph tell us?

Answer 27

Change in x units times y units

Question 28

What does g = 9.8 m/s represent?

Answer 28

The acceleration of gravity

Question 29

What does the area under the graph of acceleration time tell us?

Answer 29

Change in velocity

Question 30

What does Newton’s First Law say?

Answer 30

An object’s velocity will not change unless acted on by a force.

Question 31

What does Newton’s Third Law say?

Answer 31

Forces exist in pairs. FA on B = -FB on A

Question 32

The SI unit of force is the Newton, what is the Newton equal to?

Answer 32

kg·m/s²

Question 33

What is the formula for weight?

Answer 33

Weight = mass × g