General Physics Y11

An object is released from rest and falls to Earth. During its fall, the object is affected by air resistance. The air resistance eventually reaches a constant value.

Which description about successive stages of the motion of the object is correct?

• constant acceleration, then constant deceleration

• constant deceleration, then zero acceleration

• decreasing acceleration, then constant deceleration

• decreasing acceleration, then zero acceleration

Tags

NGSS.HS-PS2-1

The diagram shows a cuboid block made from a metal of density 2.5 g / cm³.

What is the mass of the block?

• 8.0 g

• 16 g

• 50 g

• 100 g

A spring obeys Hooke’s law.

Which graph is obtained by plotting the extension of the spring against the load applied?

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• 
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A force acts on an area to produce a pressure.

Which changes produce the same pressure?

• double the area and double the force

• double the area and halve the force

• double the area and make the force four times bigger

• halve the area and double the force

A weight-lifter raises a 2000 N weight through a vertical height of 2.0 m in 0.80 s.

What useful power does he develop in doing this?

• 800 W

• 3200 W

• 4000 W

• 5000 W

The diagram shows a simple mercury barometer.

Which labelled length is measured when finding atmospheric pressure?

• Level A

• Level B

• Level C

• Level D

A driving instructor gives a student a sudden order to stop the car in the shortest possible time.

Fig. 1.1 shows the speed-time graph of the motion of the car from the moment the order is given.

(a) The order to stop is given at time t = 0 s.

(i) State the speed of the car at t = 0 s.

(ii) Suggest why the car continues to travel at this speed for 0.9 s.

(b) Calculate

(i) the deceleration of the car between t = 0.9 s and t = 4.0 s.

(ii) the total distance travelled by the car from t = 0 s.

(c) Describe and explain a danger to a driver of not wearing a safety belt during a sudden stop.

Tags

NGSS.HS-PS2-1

Five identical bags of rice are balanced on a uniform beam by an object of mass 10 kg. Two more identical bags of rice are added to the other five. The average position of the bags on the beam does not change.

What mass now balances the bags?

• 3.5 kg

• 7.0 kg

• 12 kg

• 14 kg

Tags

NGSS.HS-PS2-1

The source of solar energy is the Sun.

Tick the box next to those resources for which the Sun is also the source of energy.

• coal

• geothermal

• hydroelectric

• nuclear

• wind

Tags

NGSS.MS-LS1-6

Fig. 3.2 shows a model train, travelling at speed v, approaching a buffer.

The train, of mass 2.5 kg, is stopped by compressing a spring in the buffer. After the train has stopped, the energy stored in the spring is 0.48 J.

Calculate the initial speed v of the train.

Tags

NGSS.HS-PS2-1