Transcript Force Questions

Forces
GCSE Questions
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(a)
Megan’s dog is pulling on his lead.
Which arrow, A, B, C or D, shows the direction of this force?
Give the letter.
................................ 1 mark
(b)
Megan has to pull to keep the dog still.
Which arrow shows the direction of this force? Give the letter.
................................ 1 mark
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(c) Suddenly the dog’s collar breaks
(i) When the collar breaks, the lead moves.
Draw an arrow on the diagram to show which way the lead starts to move.
1 mark
(ii) Why does the lead move when the collar breaks?
1 mark
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Answer
(a)B
(b)D
(c)(c) (i) one mark for the arrow pointing to the left
accept arrows pointing diagonally downwards and to the
left
do not accept arrows pointing vertically downwards
(ii)
answers should refer to an unbalanced force
pulling
because Megan is pulling it but the dog is no longer
pulling in the opposite direction therefore there is a
net force acting to the left.
OR
force D is still acting but force B has been removed
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Which of the following statements in the list
describe forces?
a) the movement of a car travelling along a road
b) the push of a jet engine on an aeroplane.
c) the flow of electricity through a light bulb.
d) the weight of a book on a table.
e) the pull of a horse pulling a cart.
f) the speed of a hockey ball flying through the
air.
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Which of the following statements in the list
describe forces?
a) the movement of a car travelling along a road
b) the push of a jet engine on an aeroplane.
c) the flow of electricity through a light bulb.
d) the weight of a book on a table.
e) the pull of a horse pulling a cart.
f) the speed of a hockey ball flying through the
air.
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A girl throws a ball. The diagram shows the path of the ball after
she has thrown it.
Explain how can you tell from the path of the ball that there is a
force acting on the ball? (3 marks)
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The path is curved (1 mark). The ball is changing
direction – therefore it is changing velocity –
accelerating (1 mark). Acceleration is evidence of
a net force acting (1 mark).
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Penny sits on a mat
at the top of a
helter-skelter and
then slides down a
chute around the
outside.
(a)
Name two of
the forces acting
on Penny as she
slides from point A
to point B.
(2 marks)
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(b)
As Penny
slides from point A
to point B, the
vertical forces
acting on her are
balanced.
Describe
Penny’s speed when
the forces acting on
her are balanced.
(1 mark)
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(c)
Penny goes back for
a second go. This time she
sits on a smooth cushion
instead of a mat.
She goes much
faster on the cushion. Give
the reason for this.
(1 mark)
(d)
On her third go
Penny lies back on the
cushion with her arms by
her side.
What happens to her
speed? Give the reason for
your answer.
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(a) any two (1 mark each) from:
• gravity or weight
• friction
• reaction force
• air resistance accept ‘drag’
(b) The speed is constant (stays the same) (1 mark)
(c) Friction is less- ‘it is smoother’ or ‘it is slippery’ are
insufficient (1 mark)
(c) Friction (and or air resistance) decreases because
she is more streamlined (1 mark) so she accelerates –
her speed increases. (1 mark)
Garfield Graphics included with kind permission from PAWS Inc. All Rights Reserved.
Garfield Graphics included with kind permission from PAWS Inc. All Rights Reserved.