Chapters 4-8

Question 1

Force

Answer 1

Something capable of changing an objects state of motion (velocity)

Question 2

Inertia

Answer 2

The natural tendency of an object to maintain a state of constant velociy

Question 3

Newtons 1st Law

Answer 3

In the absence of an unbalanced force, a body maintains its velocity

Question 4

An unbalanced net force shows what?

Answer 4

A change in velocity

Question 5

Newtons 2nd law

Answer 5

An unbalanced net force, F, on an object of mass, m, will give it an acceleration

Question 6

What are the units of force

Answer 6

Newtons (N)

Question 7

Acceleration

Answer 7

A=F/m

Question 8

Position Formula

Answer 8

x=x0+v0t+1/2at^2

Question 9

Velocity

Answer 9

v=v0+at

Question 10

Newtons 2nd Law Component Form

Answer 10

EFx=MAx
EFy=MAy
EFz=MAz

Question 11

Fx=MAx

Answer 11

FCos(0)=MAx

Question 12

The force exerted on an object by gravity is called?

Answer 12

Weight

Question 13

What is the force of Gravity

Answer 13

9.8m/s^2

Question 14

What is the equation for weight?

Answer 14

W=mg

Question 15

What are the units of weight?

Answer 15

Newtons(N)

Question 16

Newtons 3rd Law

Answer 16

For every force, there is an equal and opposite force

Question 17

Normal Force

Answer 17

FSin(0) - mg

Question 18

Acceleration in the x direction

Answer 18

FCos(0)=MAx

Question 19

Normal Force on Incline

Answer 19

N-mgCos(0)

Question 20

Acceleration Down an Incline/Sliding Block

Answer 20

mgsin(0)=MAx

Question 21

Normal Force on Sliding Block

Answer 21

N-FSin(0)-mg

Question 22

Dot Product

Answer 22

(ACos(0))B

Question 23

Cross Product

Answer 23

ABSin(0)

Question 24

Work

Answer 24

FdCos(0)

Question 25

A Book Falls From A Height

Answer 25

F=-mgy^
W=Fd
U=mgh

Question 26

Gravatational PE

Answer 26

U=mgh

Question 27

A Spring Is Stretched and Released

Answer 27

F=-kx
W=U2-U1

Question 28

PE of a Spring

Answer 28

U=1/2kx^2

Question 29

Kinetic Energy

Answer 29

K=1/2mv^2

Question 30

Conservation of Energy

Answer 30

K1+U1=K2+U2

Question 31

Power

Answer 31

W/t (Watts)
mgd/t

Question 32

Linear Momentum

Answer 32

P=mv

Question 33

Linear Momentum 2+

Answer 33

M1V1i+M1V1i=M2V2f+M2V2f

Question 34

Elastic Collision

Answer 34

KE and Momentum are conserved

Question 35

Inelastic Collision

Answer 35

Only Momentum is conserved

Question 36

Mass Collides with stationary mass

Answer 36

mv=m1+m2
1/2mv^2
1/2M1+M2Vf^2