 Newton's Laws
3 years ago
thephysicsgrove
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Practice 28 QuestionsShow answers
• Question 1
30 seconds
Q. The force that one surface exerts on another when the two surfaces rub against each other
Speed
Force
Net force
Friction
• Question 2
60 seconds
Q. According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will
remain in motion.
eventually come to a stop.
change its momentum.
accelerate.
• Question 3
30 seconds
Q. The SI units for force are...
Kilograms
Newtons
Meters per second
Pounds
• Question 4
30 seconds
Q. An object at rest will _______ if no outside forces are applied.
Stay at rest
Increase Velocity
Decrease Mass
• Question 5
60 seconds
Q. If a force of 26 N is exerted on two balls, one with a mass of 0.52 kg and the other with a mass of 0.78 kg, which ball will have the greater acceleration?  (F=ma)
The one with a mass of .78 kg will have the greatest acceleration.
The one with a mass of .52 kg will have the greatest acceleration.
They will both accelerate at the same rate.
• Question 6
180 seconds
Q. If you exert a net force of 8 N on a 2-kg object, what will its acceleration be?
2 m/s2
4 m/s2
16 m/s2
10 m/s2
• Question 7
180 seconds
Q. If two forces of the same magnitude are acting on an object in the same direction, the resultant force will become zero. True or false?
true
false
• Question 8
60 seconds Q. What is the net force?
400 N Up
400 N Down
- 400 N Down
800 N Down
• Question 9
120 seconds
Q. Keep in mind F=ma
If you are pushing a 1000 kg car and it accelerates at 0.5 m/s^2, what is the resultant force on the car?
2000 N
60N
500 N
12 N
• Question 10
120 seconds Q. A bicycle rider travels 100 kilometres in 4 hours.  What is the cyclist's average speed?
400 km/h
25 km/h
104 km/h
0.025 km/h
• Question 11
30 seconds Q. How would you describe the motion of the object?
Constant Speed
Acceleration (speeding up)
Deceleration (slowing down)
No motion
• Question 12
30 seconds
Q. 1000 kg is the _______ of an object.
mass
weight
force
acceleration
• Question 13
30 seconds
Q. 45 m/s2 is the...
Mass
Force
Acceleration
weight
• Question 14
30 seconds
Q. A dragster race car is able to accelerate from 4 m/s to 60 m/s in 2.5 seconds. What is the dragsters acceleration?
22.4 m/s 2
24 m/s 2
240 m/s 2
600 m/s 2
• Question 15
60 seconds Q. What is the magnitude (size) and direction of the net force?
21 N to the Left
3 N to the Left
21 N to the Right
3 N to the Right
• Question 16
60 seconds Q. What is the magnitude (size) and direction of the net force?
10 N to the Right
10 N to the Left
0 N
8 N to the Left
• Question 17
60 seconds Q. What is the magnitude (size) and direction of the net force?
14 N Down
14 N Up
6 N Up
6 N Down
• Question 18
60 seconds Q. What is the magnitude (size) and direction of the net force?
15 N to the left
15 N to the right
1 N to the left
1 N to the right
• Question 19
120 seconds
Q. What is the net force needed to accelerate a 66 kg skier at 2 m/s2?
132 N
33 N
58.8 N
.030 N
• Question 20
120 seconds
Q. A net force of 250 N is applied to an object that accelerates at a rate of 5 m/s2.  What is the mass of the object?
50 kg
245 kg
.02 kg
25.5 kg
• Question 21
45 seconds
Q. What is the unit for velocity?
m/sec
kg/sec
kg/m
kg m/sec
• Question 22
30 seconds
Q. What is the unit for acceleration?
m/s
m/s2
kg*m/s
N
• Question 23
45 seconds
Q. What is the unit for mass?
m/sec
kg/sec
kg
kg m/sec
• Question 24
45 seconds
Q. What are the units of Force?
kg*m/sec
kg*m
N
N*sec
• Question 25
30 seconds
Q. Which of Newton's laws is the reason why a gun 'kicks' backward when a bullet is fired?
Law 1
Law 2
Law 3
• Question 26
30 seconds
Q. Why law states that an object at rest tends to stay at rest unless an outside force acts upon it?
Law 1
Law 2
Law 3
• Question 27
30 seconds
Q. Which law explains why it takes more force to move a truck than to move a bike at the same rate of acceleration?
Law 1
Law 2
Law 3
• Question 28
30 seconds
Q. You push on a tree with 20 N of force. If the tree doesn't move, the tree is pushing back on you with _____of force.