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Answer ALL questions. Write your answers in the spaces provided.
Some questions must be answered with a cross in one of the four boxes . If you change your
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mind about an answer, put a line through the box and then mark your new answer with
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1 (a) Figure 1 shows the two forces acting on a beach ball as it falls through the air.
air resistance
weight = 2.5 N
(Source: © Stepan Bormotov/Shutterstock)
Figure 1
The resultant of these two forces is 0.92 N downwards.
(i) The mass of the beach ball is 0.25 kg.
Calculate the acceleration of the beach ball as it falls.
Use the equation
F=m×a
(3)
acceleration = ........................................ ................ . . . . . . m / s2
(ii) Calculate the size of the air resistance force on the beach ball.
(1)
air resistance = ............................................... . . . . . . . . . . . . . . . N
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Answer ALL questions. Write your answers in the spaces provided.
Some questions must be answered with a cross in one of the four boxes . If you change your
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
mind about an answer, put a line through the box and then mark your new answer with
a cross .
1 (a) Figure 1 shows the two forces acting on a beach ball as it falls through the air.
air resistance
weight = 2.5 N
(Source: © Stepan Bormotov/Shutterstock)
Figure 1
The resultant of these two forces is 0.92 N downwards.
(i) The mass of the beach ball is 0.25 kg.
Calculate the acceleration of the beach ball as it falls.
Use the equation
F=m×a
(3)
acceleration = ........................................ ................ . . . . . . m / s2
(ii) Calculate the size of the air resistance force on the beach ball.
(1)
air resistance = ............................................... . . . . . . . . . . . . . . . N
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3
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