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A spring can be stretched by hanging weights on it. The larger the force, the greater the stretch.

# Forces 3

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Push and friction are both types of force. By the early 20th century, Einstein developed a theory of relativity that correctly predicted the action of forces on objects with increasing momenta near the speed of light.

1.
A spring can be stretched by hanging weights on it. Which of the following is true?
The larger the force, the greater the stretch
The smaller the force, the greater the stretch
The spring does not exert a force on the weight
The weight does not exert a force on the spring
2.
What is weight measured in?
Joules
Kilograms
Newtons
Pascals
Weight is a force so is measured in newtons
3.
On Earth, 1kg weighs approximately 10 newtons. What would be the weight of 500g?
1N
5N
50N
500N
500g = 0.5kg, 0.5kg weighs 0.5 x 10 = 5N
4.
Which of the following statements about balanced forces is NOT true?
A moving object will continue to move at constant speed
A stationary object will not move
They are the same size acting in the opposite direction
They are the same size acting in the same direction
5.
Which of the following is NOT a force?
Gravity
Mass
Pull
Weight
6.
Friction .......
doesn't affect a moving object
slows a moving object
speeds up a moving object
starts an object moving
7.
What is force measured in?
Joules
Kilograms
Newtons
Pascals
8.
Which of the following statements about unbalanced forces is NOT true?
They can change the direction of a moving object
They can slow down an object
They have no effect on an object
They speed up an object
9.
On Jupiter, 1kg weighs approximately 25 newtons. What would be the weight of 100g?
0.25N
2.5N
250N
2500N
100g = 0.1kg, 0.1kg weighs 0.1 x 25 = 2.5N
10.
Which of the following is NOT a touching force?
A push
Air resistance
Friction
Magnetism
Magnets attract or repel at a distance
Author:  Sue Davison