WorksheetsUnit 4: Newton's Laws
Total questions: 25
Worksheet time: 20mins
A force perpendicular to any surface ________.
normal force
inertia
tension
weight
Always pulls down ________.
normal force
inertia
tension
weight
The tendency of an object to retain its state of motion _______.
normal force
inertia
weight
tension
Force due to a rope or string ______
normal force
inertia
weight
tension force
An object is initially in motion to the right. The forces on the object are shown in the free body diagram below. Which of the following best describes the motion of the object?
it continues in motion to the right with constant velocity
it continues in motion to the right and slows down
it continues in motion to the right and speeds up
it stops immediately
The weight of a teenager is 744 N. What is the child’s mass?
76 kg
80 kg
7291 kg
8022 kg
A 125 kg offensive lineman pushes a 100 kg defensive lineman with a force of 200 N. How much push force does the offensive lineman experience?
200 N
0 N
400 N
90 N
A 15.0 kg dog runs so that his acceleration is 2 m/s2, what is Net Force?
15 N
30 N
7.5 N
12 N
A child whose weight is 450 N on Earth travels to the Moon, where the acceleration due to gravity is only 1.60 m/s2 down.
What is the child's mass?
87 kg
55 kg
30 kg
46 kg
A child whose weight is 450 N on Earth travels to the Moon, where the acceleration due to gravity is only 1.60 m/s2 down. What would be the child's weight on the moon?
74 N
64 N
98 N
110 N
A model rocket is equipped with a rocket engine that produces 75 N of thrust. The rocket is initially at rest on the ground. The combined mass of the rocket and fuel is 15 kg. What is the weight (Fg) of the rocket?
147 N
63 N
110 N
100 N
The free-body diagram above represents all of the forces acting on a 5.7 kg object. The net force acting on the object is _______.
30 N to the left
30 N to the right
60 N to the left
60 N to the right
90 N to the right
What is the acceleration of the object if its mass is 5.7 kg
0 m/s2
2 m/s2
3.1 m/s2
5.3 m/s2
55.9 m/s2
A 5 kg object is lifted upwards with a rope, and experiences constant velocity. Which of the following free body diagrams correctly shows the forces on the object?
A 8.0 kg monkey climbs a rope such that his upward acceleration is 2 m/s2. What is weight (Fg) exerted by the monkey?
98 N
78 N
20 N
118 N
A 8.0 kg monkey climbs a rope such that his upward acceleration is 2 m/s2. What is Net Force?
16 N
103 N
20 N
118 N
A 8.0 kg monkey climbs a rope such that his upward acceleration is 2 m/s2. What is the tension force (Ft) exerted by the monkey climbing the rope?
94 N
103 N
28 N
113 N
A block of slides down a ramp, which free body diagram represents the forces acting on it
True or False: If forces acting on an object are balanced, the net force will be zero.
True
False
True or False: The weight a person would be the same if they were on the Earth or the moon.
True
False
An object is attached to a string and then spun around in a circle with a constant speed. After a period of time, the string breaks and the object flies off in a straight line. Which of the following describes why this would happen?
Newton's 1st law
Newton's 2nd law
Newton's 3rd law
None of these
You're riding a bike when suddenly you hit a large rock. The bike stops moving but you fly over the handlebars. This is an example of ....
centrifugal force
inertia
momentum
none of these
An object traveling at a constant speed has an acceleration of
zero
positive
negative
none of these
How far will a hanging 0.40 kg object stretch a spring if its spring constant is 300 N/m
0.05 m
120 m
0.013 m
1.2 m
A spring is stretched 0.15m and the force was 1500 N. What is the spring constant?
1,000 N
10,000 N
225 N
2.25 N
