WeyPhys KS3 Forces & gravity
Authored by Gareth Thomas
Physics, Science
3rd Grade
Used 61+ times
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16 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which direction does a friction force act?
Left
Right
Downwards
Always against the motion or pulling force
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which force acts upwards on an object immersed in a fluid?
Flotation force
Water resistance
Anti-gravity
Upthrust
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The end of object attracts to both poles of a magnet. What is the object?
Another magnet
A piece of copper
A piece of glass
A piece of iron
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a person pushes a large stationary crate with a force of 250N to the left, but the friction force is 250N to the right...
The forces are balanced and the crate will stay still
The forces add up to 500N so the crate will accelerate
The forces add up to 500N so the crate stands still
The forces are unbalanced so the crate stays still
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A cyclist is riding on level ground with a forwards force of 40N. The air-resistance pushing against her is also 40N.
She...
...has a resultant force of 0N so she stops
...has a resultant force of 0N and carries on at the same speed
...has a resultant force of 80N so she accelerates
...has a resultant force of 80N so she decelerates
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A car has a forwards driving force of 1200N and air-resistance and friction forces pushing backwards of 500N.
The car will...
Accelerate because the forces are unbalanced and there is a forwards resultant force of 700N
Accelerate because the forces are balanced, with a forwards resultant force of 1700N
Carry on at the same speed
Decelerate
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why are swimmers top speeds lower than runners?
Water is less dense than air and has less resistive force at the same speed.
Water is more dense than air and has more resistive force at the same speed
Water resistance acts upwards
Water resistance is due to particles
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