Motion Test

Question 1

Reference Frames

Answer 1

A stationary point or object that allows you to see one object move past another. A reference point allows you to see motion.

Question 2

Speed

Answer 2

The distance an object travels in a certain amount of time.
“How fast”
Formula: Speed = distance / time
Unit: m/sec , cm/sec , km/hr, miles/hr

Question 3

Average Speed

Answer 3

The average speed over the entire trip.

Avg Speed= total distance/ total time

Question 4

Instantaneous Speed

Answer 4

The speed at any given moment

Question 5

Constant Speed

Answer 5

Traveling Equal distances in equal amounts of time.

Question 6

Velocity

Answer 6

Velocity is speed AND direction.
“How fast and which way”
Velocity=distance/time
Unit: m/sec

Question 7

Acceleration

Answer 7

A change in velocity (change in speed or direction).
Formula: A = (Final Velocity - Initial Velocity) / time.
Unit: m/sec2

Question 8

5 Steps for Graphing:

Answer 8

1. Title (y vs x)
2. Label axes (unit)
3. Scale (evenly spaced)
4. Plot data (x,y)
5. Connect points

Question 9

distance vs time

Answer 9

Shows dist covered each second.
Slope of line shows speed.
1.	flat line
shows no motion
2.	slanted line
shows constant speed
3.	curve
shows acceleration
(curved up=speeding up, curved down=slowing down)

Question 10

velocity vs time

Answer 10

Shows how vel changes each second.
Slope of line shows accel.
1.	flat line
shows constant speed
2.	slanted line
shows acceleration
(slanted up=speeding up, slanted down=slowing down)

Question 11

acceleration vs time

Answer 11

Shows how acceleration changes each second.
1. flat line
shows constant acceleration