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Module 5 PHYSICS
Test Description: Newton's Laws
Instructions: Answer all questions to get your test result.
1) What is Newton's first Law?
A
F=ma
B
An object in motion (or at rest) tends to stay in motion (or at rest) unless acted uon by an outside force.
C
Every action has an equal and opposite reaction
2) What is Newton's 2nd law?
A
An object in motion (or at rest) tends to stay in motion (or at rest) unless acted uon by an outside force.
B
Every action has an equal and opposite reaction
C
F=ma
3) What is Newton's 3rd law?
A
F=ma
B
Every action has an equal and opposite reaction
C
An object in motion (or at rest) tends to stay in motion (or at rest) unless acted uon by an outside force.
4) 2. A bicyclist is traveling at high speed and is not watching where he is going. His front tire catches in a sewer grating, causing the bike to stop almost instantly. This makes the rider fall off of the bike. Which way will the biker fall?
A
Backwards
B
Foward over the bike
C
To the right
D
To the left
5) 3. You find a measurement of 20 Newtons written in a laboratory notebook. Is this a measurement of weight or mass?
A
weight
B
mass
6) 3. You find a measurement of 22 kg written in a laboratory notebook. Is this a measurement of weight or mass?
A
mass
B
weight
7) 6. For a given object and surface, is the coefficient of static friction (µs) greater than or less than the coefficient of kinetic friction (µk)?
A
Less than
B
Greater Than
8) Assuming that there is no friction, how much force is necessary to accelerate a 235 gram object at 1.33 m/sec2?
A
177 N
B
313 N
C
.2 N
D
.3 N
9) An object has a mass of 22 grams. What is its weight?
A
.216 N
B
2.15 N
C
215.6 N
10) A rocket ship weighs 20,501 Newtons on Jupiter. How much will it weigh on earth? (The acceleration due to gravity on Jupiter is 23.2 m/sec2.)
A
8,660.3 Newtons
B
200,909 Newtons
C
20.9 Newtons
11) If a rock has a mass of 55 grams on Mars, how much will it weigh on earth?
A
539 N
B
.539 N
C
5.39 N
12) A mover pushes a 235-pound crate across a driveway (µs = 0.42, µk = 0.24). Assuming that the mover has already gotten the crate moving, how much force must the mover push with in order to keep the crate moving at a constant velocity?
A
.564 lbs
B
56.4 lbs
C
552.72 lbs
D
55.27 lbs
13) A tractor pulls a 225-kg bale of hay with a force of 4,233 Newtons. If the coefficients of friction are µs = 0.42 and µk = 0.30, how fast will the bale accelerate, provided that it is already moving?
A
.30
B
2205
C
15.87
D
661.5
14) A person is pushing on a 327-pound rock. What frictional force must he overcome to get the rock moving? (µs = 0.32, µk = 0.20)
A
104.64 N
B
1025.5 N
15) While driving down a country road, a man has to stop because a 225-pound rock has fallen off of a hill and has landed in the middle of the road (μs = 0.45, μk=0.32). What is the frictional force the man must overcome to get the rock moving?
A
3240 lbs
B
101.25 lbs
*select an answer for all questions
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