Ch 1- 1dimensional Motion

Question 1

Vector

Answer 1

Magnitude & direction

Ex: velocity, acceleration, displacement

Question 2

Convert m/s - km/h (vice versa)

Answer 2

M/s-k/h (x3.6)

Km/h-m/s (divide by 3.6)

Question 3

Uniform motion/uniform accelerated motion

Answer 3

V=d/t
Object is moving at the same velocity
Same slope + same velocity

Question 4

Instantaneous velocity

Answer 4

Velocity of an object at one moment of time

Slope of tangent = instantaneous velocity at time t on a d-t graph that isnt straight

Question 5

Displacement-time graph

Answer 5

Calc speed- look at ENTIRE trip
Calc velocity-d/t, do not take backwards movement into account (straight line), distance should be positive
Slope = velocity
Slope of flat line is zero

Question 6

Velocity-time graph

Answer 6

Flat line-constant velocity (at rest)
Slope is accel
Area under line is displacement ( b/h ) ONLY for rectangles
Negative values? Going backwards

Question 7

Deceleration

Answer 7

Object moving in positive direction is slowing down
OR
Object mocing in negative direction is speeding up

Question 8

Bi-directional motion

Answer 8

Back/forth, up/down motion along a straight line
Do not account for air resistance & friction
Ex: objects moving on a ramp

Question 9

Max height?

Answer 9

Velocity = ZERO

Happens halfway through air time, ONLY if it comes back down to same height

Question 10

Gees

Answer 10

No units

Divide accel to accel due to gravity

Question 11

Scalar

Answer 11

Magnitude only

Ex: time, speed, distance