Download PHYSICS FORCES TEST REVIEW WORKSHEET

PHYSICS FORCES TEST REVIEW WORKSHEET – This paper is not worth any points, the key is posted.
1. A man has a mass of 77kg. What force is the Earth applying on him? 754.6N
2. A man has a weight of 2470 newtons on Earth and a weight of 243 newtons on planet Z.
What is the acceleration due to gravity on planet Z?
0.96m/s2
Use this graph to answer questions 3-5. This is a 1204g wood mass being pulled by the force meter at a
constant velocity.
-1.2-Force (N)
-0.8--0.4--time (s)
3. What force was applied to get this object moving? Ff = 1.1N
4. What is the static coefficient of friction for these 2 surfaces?
FN = 11.8N
= 0.093
5. What is the sliding coefficient of friction for these 2 surfaces? = 0.068
Ff = 0.8N
6. What force would have to be applied to start a 12.3kg wood block moving on a surface with a
static coefficient of friction of 0.438?
Ff = 52.8 N
7. If planet Dwart has a mass of 2.3 x 106 kg and planet DuHunt has a mass of 3.5 x 107 kg, what
is the force of attraction between the 2 planets if they are 4673km apart?
F = 2.46 x 10-10 N
use meters
8. Bobby and Suzy are dancing 12cm apart. If Bobby has a mass of 80kg and Suzy has a
mass of 40kg, what is the force of attraction between them?
F = 1.5 x 10-5N
use meters
9. The Earth has a radius of approximately 6371300 meters. If you are on the space shuttle
orbiting 270km above the Earth's surface, what is your acceleration towards the Earth?
g = 9.04m/s2
distance = 6641300m
10. What are Newton's three laws and list an example of how they apply to real life.
11. A ping pong ball is dropped from the stairwell and reaches terminal velocity just as it hits the floor. If
the ball dropped 4.2m, what is the terminal velocity of the ping pong ball?
Vi=0
a=9.8m/s2 d=4.2
Vf2 = Vi2 +2ad
Vf = 9.1m/s
12. Jupiter has a radius of 11AU, how many years does it take Jupiter to travel around the Sun?
P2 = 113
P = 36.5 years