Lecture 1

Question 1

Scalar

Answer 1

Physical quantity that has magnitude by NO direction

Question 2

Vector

Answer 2

Physical quantity with both magnitude AND direction

Question 3

EQN: Speed

Answer 3

distance/time

Question 4

EQN: Velocity

Answer 4

displacement/time

Question 5

Instantaneous

Answer 5

rate at any one moment during a trip

Question 6

EQN: Acceleration

Answer 6

Change in velocity/time

Question 7

Linear Motion Equation:
When Vf is unknown
a is constant

Answer 7

Xf – Xi = Vi + ½ at^2

Question 8

Linear motion Equation:
When Xf-Xi is unknown
a is constant

Answer 8

Vf - Vi = at

Question 9

Linear Motion Equation:
When t is unknown
a is constant

Answer 9

Vf^2 = Vi^2 + 2a(Xf-Xi)

Question 10

Average velocity in uniformly accelerated motion

Answer 10

Vavg = 1/2(Vf + Vi)

Question 11

3D triangle problem eqn for displacement

Answer 11

Sqrt(a^2 + b^2 + e^2) = net displacement

Question 12

Peak height of projectile eqn

Answer 12

v = sqrt(2gh)

Question 13

Linear Motion w/o equations - Distance

Answer 13

Avg. Velocity * Time

Avg. Velocity = middle of velocities given

Question 14

Linear Motion w/o equations - Acceleration

Answer 14

Vf - Vo / t

Question 15

Newton’s First Law of Motion

Answer 15

Inertia

Object in motion will stay in motion unless it is acted upon by a net force.

Question 16

Newton’s Second Law of Motion

Answer 16

F = ma
m&a are inversely proportional
F&a are directly proportional

Question 17

Newton’s Third Law

Answer 17

For every action there is an equal and opposite reaction

Question 18

NET FORCE due to gravity and normal force of an inclined plane is equal to

Answer 18

mgsin(theta)

mgSLIDE

Question 19

Normal force of an inclined plane is equal to

Answer 19

mgcos(theta)

Question 20

Gravity related to force equation

Answer 20

F = G (m1m2)/r^2