Subsection 3.1. Momentum and Newton’s laws of motion for Physics, A Level - revisedeck

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3.1. Momentum and Newton’s laws of motion

A subsection of Physics, 9702, through 3. Dynamics

Listing 10 of 131 questions

A car travelling with speed 28 m s–1 leaves a motorway on an exit road. The end of the exit road is 22 m higher than the motorway. If only the force of gravity is considered, what will be the speed of the car at the end of the exit road?

9702_w12_qp_13

MCQ

2012

Paper 1, Variant 3

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Water is pumped through a hose-pipe at a rate of 90 kg per minute. It emerges from the hose-pipe horizontally with a speed of 20 m s–1. Which force is required from a person holding the hose-pipe to prevent it moving backwards?

9702_w14_qp_11

MCQ

2014

Paper 1, Variant 1

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Water is pumped through a hose-pipe at a rate of 90 kg per minute. It emerges from the hose-pipe horizontally with a speed of 20 m s–1. Which force is required from a person holding the hose-pipe to prevent it moving backwards?

9702_w14_qp_12

MCQ

2014

Paper 1, Variant 2

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Two blocks X and Y are falling through a vacuum in a uniform gravitational field, as shown...

9702_w15_qp_11

MCQ

2015

Paper 1, Variant 1

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Two frictionless trolleys are moving towards each other along the same horizontal straight line. Their masses and velocities are shown...

9702_w16_qp_12

MCQ

2016

Paper 1, Variant 2

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In still air, a bird can fly at a speed of 10 m s–1. The wind is blowing from the east at 8.0 m s–1. In which direction must the bird fly in order to travel to a destination that is due north of the bird’s current location?

9702_w17_qp_11

MCQ

2017

Paper 1, Variant 1

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The three forces acting on a hot-air balloon that is moving vertically are its weight, the force due to air resistance and the upthrust force. The hot-air balloon descends vertically at constant speed. The force of air resistance on the balloon is F. Which weight of material must be released from the balloon so that it ascends vertically at the same constant speed?

9702_w17_qp_11

MCQ

2017

Paper 1, Variant 1

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The diagram shows a motorised vehicle for carrying one person. 400 mm 600 N 600 N direction of motion axle The vehicle has two wheels on one axle. The passenger stands on a platform between the wheels. The weight of the machine is 600 N. Its centre of mass is 200 mm in front of the axle. The wheel radius is 400 mm. When stationary, a passenger of weight 600 N stands with his centre of mass 200 mm behind the axle to balance the machine. The motor is now switched on to provide a horizontal force of 90 N at the ground to move the vehicle forwards. How far and in which direction must the passenger move his centre of mass to maintain balance?

9702_w17_qp_11

MCQ

2017

Paper 1, Variant 1

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Water is pumped through a hose-pipe at a rate of 90 kg per minute. Water emerges horizontally from the hose-pipe with a speed of 20 m s–1. What is the minimum force required from a person holding the hose-pipe to prevent it moving backwards?

9702_w18_qp_11

MCQ

2018

Paper 1, Variant 1

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A mass is placed on a frictionless slope inclined at 30° to the horizontal. The mass is then released. What is its acceleration down the slope?

9702_w18_qp_13

MCQ

2018

Paper 1, Variant 3

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Questions Discovered

131