Physics Question Bank 2 2012-2013

7/28/2019 Physics Question Bank 2 2012-2013

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Paper 1

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What distance the car covers in the first 2 seconds only?

a- 18 m2 b- 18 m c- 12 m2 d- 12 m

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8- The diagram shows a balance being used to find the weight of a baby. The

weight of the basket can be ignored. At equilibrium, the pivot is nearer to the

weight W than to the baby.

What is the weight of the baby?

(a) less than W

(b) more than W

(c) = W

(d) Impossible to tell from these given information


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Paper 2

1- A factory measures 120 m, 60 m, 20 m. The air inside it has a density of 1.1

kg/m3, when it is cool.

a) Calculate the volume of the air in the theatre, in m3

b) Calculate the mass of the air. State the equation you are using.

2- The diagram below shows a uniform metre rule, weight W, pivoted at the 75 cm

mark and balanced by a force of 2 N acting at the 95 cm mark.

a) Calculate the moment of the 2 N force about the pivot.

b) Use theprinciple of moments to calculate the value of W in N.

c) Use the conditions of equilibrium to calculate the upward push happens atthe pivot (fulcrum) to this rule.


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3- A girl wearing a parachute jumps from a helicopter. She does not open the

parachute straight away. The table shows her speed during the first 9 seconds

after she jumps

a) Complete the table by writing down the speed at 2 and 3 seconds?b) How many seconds after she jumped did the girl open her parachute?

How do the results show this?

..

..

c) Plot a graph of speed against time.

d) What force pulls the girl down?

Time in seconds 0 1 2 3 4 5 6 7 8 9

Speed in m/s 0 10 40 25 17 12 10 10


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4- On this graph, Sketch a velocity-time graph for a car moving with uniform

acceleration from 0 m/s to 30 m/s in 15 seconds then moves with constant

velocity for another 10 seconds.

a) Use the sketch graph to find the distance travelled during the first 15seconds.

b) Use the sketch graph to find the distance travelled during the last 10seconds.

c) Calculate the average speed of this car.


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5- The diagram below shows some of the forces acting on a carof mass

800kg.

a. State the size (value) of the total drag force if the car is travelling at aconstant speed

b. The driving force is increased to 3200Ni. Find the resultant force on the car at this instant.

ii. Write down, in words, the equation connecting mass, forceand acceleration.

iii. Calculate the acceleration of the car due to the resultantforce.

Total drag force

Driving force

2000N

Direction of

motion

Documents

Physics Question Bank 2 2012-2013