F = ma / Resultant Forces - Brookshine SchoolsLevel IGCSE Subject Physics (0625/0972) Exam Board...

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Question Paper 1

F = ma / Resultant Forces

Time allowed: 23 minutes

Score: /18

Percentage: /100

Grade Boundaries:

Level IGCSE

Subject Physics (0625/0972)

Exam Board Cambridge International Examinations (CIE)

Topic General Physics

Sub-Topic F = ma / Resultant Forces

Booklet Question Paper 1

9 8 7 6 5 4 3 2 1

>85% 75% 68% 60% 55% 50% 43% 35% <30%

A satellite orbits the Earth above the atmosphere at a constant speed.

The diagram shows the satellite at one point in its circular orbit around the Earth.

Which labelled arrow shows the direction of the resultant force on the satellite at the position shown?

direction of rotation of satellite

satellite

Question 1

An object is acted upon by a 3N force and by a 4N force.

Each diagram shows the two forces.

Which diagram also shows the resultant X of these two forces?

Question 2

The engine of a car produces a driving force of 5000 N on the car. Resistive forces R also act on the car, as shown.

R 5000N

The car has a mass of 800kg and an acceleration of 1.0m/s2.

What is the value of R?

A 800N B 4200N C 5800N D 8000N

Question 3

An object moves in a circle at constant speed.

Which statement about the force needed on the object is correct?

A. A force away from the centre of the circle keeps the object moving in the circle.B. A force in the direction of motion of the object keeps it moving in the circle.

C. A force towards the centre of the circle keeps the object moving in the circle.

D No force is needed to keep the object moving at constant speed in the circle.

Question 4

A parachutist is falling at terminal velocity, without her parachute open.

She now opens her parachute.

What is the direction of her motion, and what is the direction of her acceleration, immediately after she opens her parachute?

direction of motion of the parachutist

direction of acceleration of the parachutist

downwards

upwards

downwards

upwards

downwards

upwards

Question 5

The diagram shows a satellite that is moving at a uniform rate in a circular orbit around the Earth.

Which statement describes the motion of this satellite?

A It is accelerating because its speed is changing.

B It is accelerating because its velocity is changing.

C It is not accelerating but its speed is changing.

D It is not accelerating but its velocity is changing.

Question 6

Which statement about an object moving in a straight line through air is correct?

A. When it accelerates, the resultant force acting on it is zero.B. When it moves at a steady speed, the air resistance acting on it is zero.

C. When it moves at a steady speed, the resultant force acting on it is zero.

D. When it moves, there is a resultant force acting on it.

Question 7

resultant

Which diagram shows two forces X and Y with their resultant force?

resultant

Question 8

Four objects are each acted on by only two forces, as shown.

Which object is in equilibrium?

Question 9

The diagrams show four identical objects. Each object is acted on by only the three forces shown.

Which object accelerates to the right, with the smallest acceleration?

10N20N

20N30N

30N20N

10N20N30N

Question 10

air resistance 300N

force from engine 1500N

A car travels along a horizontal road at a constant speed. Three horizontal forces act on the car. The diagram shows two of these three forces.

direction of motion forwards

What is the size and the direction of the third horizontal force acting on the car?

A 1200N backwards

B 1200 N forwards

C 1800N backwards

D 1800 Nforwards

Question 11

Which list contains only properties of an object that can be changed by a force?

A direction of motion, mass, shape

B direction of motion, mass, speed

C direction of motion, shape, speed

D mass, shape, speed

Question 12

The diagram shows the only three forces acting on an object.

5.0N3.0N

What is the resultant force on the object?

B. 5.0 N towards theleft

C. 5.0 N towards theright

D. 10.0 N towards theright

Question 13

In which situation is no resultant force needed?

A. a car changing direction at a steady speed

B. a car moving in a straight line at a steady speed

C. a car slowing down

D. a car speeding up.

Question 14

Which properties of a body can be changed by applying a force to the body?

A. mass, motion and shapeB. mass and motion, but not shape

C mass and shape, but not motion

D motion and shape, but not mass

Question 15

A force acting on an object causes some properties of the object to change.

Which list contains only properties that can be changed by the action of the force?

A mass, motion and shape

B mass, motion and size

C mass, shape and size

D motion, shape and size

Question 16

A box is being moved by a fork-lift truck. The total weight of the box is 3000N.

fork-lift truck box

The force exerted by the fork-lift truck on the box is 3500 Nupwards.

What is the resultant force on the box?

A. 500 Ndownwards

B. 500 Nupwards

C. 6500 Ndownwards

D. 6500 Nupwards

Question 17

Which combination of forces produces a resultant force acting towards the right?

10N10N 5N 5N 4N 6N

Question 18

F = ma / Resultant Forces - Brookshine SchoolsLevel IGCSE Subject Physics (0625/0972) Exam Board...

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