Download Study Guide For Unit 6 Test

Newton's Laws Review for Unit 5 Test
Part 1: Name: ___________
1. What is Newton's First law?
2. What is Newton's Second Law?
3. What is Newton's Third Law?
4. What is the weight of an object whose mass is 10 kg?
5. What is the mass of an object that weighs 196 Newtons?
6. What is the acceleration of a 10 kg object when a net force of 200 Newtons acts on it?
7. A 10 kg body is observed to have an acceleration of 2 m/s 2. What is the net force
acting on it?
8. A force of 2000N is applied to a 1000 kg car at rest.
a. What is its acceleration?
b. What will its velocity be 10 seconds later?
9. A 2000 kg car goes from 10 m/s to 30 m/s in 5 seconds. What force is acting on it?
10. When an 20 Newton potato gun is fired, a .05 kg potato receives an acceleration of
100 m/s2 while it is in the tube.
a. How much force acts on the potato?
b. How much force acts on the potato launcher?
c. What acceleration does the launcher get?
d. The potato is accelerated for 0.007 seconds. How fast does it go?
Newton's Laws Review for Unit 5 Test
Part 2: Name: ___________
1. What is the weight of an object whose mass is 5 kg?
2. What is the mass of an object that weighs 98 Newtons?
3. A student with a mass of 75 kg is standing on a force (weight) scale in an elevator.
Draw the FBD.
a) What does the scale read when they are at rest? (in other words, what is the normal
force)
b) What does the scale read when they are moving up at an acceleration of 3 m/s2? (in
other words, what is the normal force)
c) What does the scale read when they are moving down at an acceleration of 3 m/s 2?
(in other words, what is the normal force)
4. A 60 kg student riding a skateboard grabs onto a railing to try to slow down. He/she
exerts a force of 10 Newtons opposite in direction to the 40 Newton pushing force.
a) Draw a diagram to represent all of the forces.
b) Write the equation showing the sum of the forces in the y direction.
c) Write the equation showing the sum of the forces in the x direction.
d) What is the acceleration in the x direction? (solve your equation from part c)
5. A 30 kg object is being held by a string. It is not moving. What is the Tension (force) in
the string? Draw the FBD. Sum the forces.
6. The same 30 kg object is being held by a string. It is being accelerated upwards at a rate
of 4 m/s2. What is the Tension (force) in the string? Draw the FBD. Sum the forces.