# Newton's Laws Part 2

## Quiz by Becky Helmer

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10 questions
• Q1
What force causes an object to slow down?
gravity
spring
normal
friction
120s
• Q2
A phone is sitting on a desk. If the normal force is 100N, what is the force of gravity?
100N
1000N
10.2N
9.8N
120s
• Q3
A table is being pushed across the room. If the applied force is 400N and the force of friction is 150N, what is the net force?
250N
550N
15.3N
40.8N
120s
• Q4
The force of gravity acting on an object is 350N. Which equation do you use to find its mass?
F=ma
m = F/a
a=F/m
120s
• Q5
The force of gravity acting on an object is 350N. What do you use for 'a' when you calculate the mass?
9.8 m/s2
7.5 m/s2
4.9 m/s2
2 m/s2
120s
• Q6
The force of gravity acting on an object is 350N. What is its mass?
65.8 kg
35.7 kg
700 kg
175 kg
120s
• Q7
An object is moving at a constant velocity. All the forces acting on it are balanced. What will happen to the motion of the object?
It will move slower.
It will move faster.
It will be at rest.
It will continue to move at a constant velocity.
120s
• Q8
The applied force and the friction force acting on a car are equal. Which of these describe the motion of the car when the applied and friction forces are equal?
The car is not moving.
The car is decelerating.
The car is moving at a constant velocity.
The car is accelerating.
120s
• Q9
A car's applied force is greater than the force of friction. Which of these describe the motion of the car?
The car is accelerating.
The car is moving at a constant velocity.
The car is decelerating.
The car is not moving.
120s
• Q10
A car is accelerating. Then the friction force increases, but is still less than the applied force. Which of these describe the motion of the car?
The car is accelerating.
The car is not moving.
The car is moving at a constant velocity.
The car is decelerating.
120s

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