Post on 02-Jan-2016
Physics Review
Retest Eligibility
• Corrections complete and checked by teacher• Answer document signed by parent• Physics retest worksheet complete– questions wrong on WS will be 1 point off of retest
grade• Mandatory tutorial session – (make sure you signed in!!!)
1. List 3 things that can cause a change in velocity.
• Change in speed• Change in direction • Change in both speed and direction
How much faster are they moving at 25 seconds compared to 5 seconds.
0 10 20 30 40 50 60 70 80 90 1000
5
10
15
20
25
30
35
40
Trip to the store
Time (seconds)
Sp
ee
d (
mile
s/h
ou
r)
What is the independent variable?
0 10 20 30 40 50 60 70 80 90 1000
5
10
15
20
25
30
35
40
Trip to the store
Time (seconds)
Sp
ee
d (
mile
s/h
ou
r)Dependent variable?
Is the red or blue line going faster at 3-4 hours into trip?
0 1 2 3 4 5 6 70
50
100
150
200
250
300
350
400
450
500
Series1Series3
Time (hours)
Dis
tanc
e (K
ilom
eter
s)
Tile SandPaper Wax Paper0
100
200
300
400
500
600
700
Series1
Dis
tanc
e Ca
r Tra
vels
(cm
) What is the dependent variable?
Independent variable?
Type of Surface
If an action force is a golf club hitting a ball, what is the reaction force?
• The ball hits the golf club
If a desk pushes down with a force of 50N , what direction and magnitude is the force of the floor on the desk?
• 50N Up
If a rocket is moving at 100meters per second, what will happen to speed if:
• Forces are balanced?• It will keep moving 100m/s
• It turns on it’s engines?• It will change velocity• (speed up, slow down, change direction
depending on direction of engine force)
If the length of the arrows represent the magnitude, Which direction will this object move?
• Down and to the right
What is the acceleration of the car in the graph?
• How long it takes speed to change D speed
D time• 40mph in 20 seconds
• Or
• 2mph every second0 5 10 15 20 25
0
5
10
15
20
25
30
35
40
45
Series1
Time (seconds)
Spee
d (m
ph)