Physics for IGCSE & O level - Forces And Motion (Section 6)
1
Which is needed for an object to move in a circle?
2
What is a scalar quantity?
3
What makes a rocket move?
4
If an object is at rest, what is its speed?
5
What is the acceleration of an object moving at a constant speed in a straight line?
6
What is the gradient of a distance-time graph?
7
What is the key factor for a satellite's motion?
8
Which of these is a characteristic of uniform motion?
9
What will a negatively sloped line on a speed-time graph indicate?
10
Which of the following is an example of the law of conservation of momentum?
Answer(C)
The collision of two trolleys.
11
What are the key elements to make a helicopter fly?
12
What type of quantity is speed?
13
Which of the following statements are true about acceleration?
14
Which of the following will experience air resistance?
15
What must be the direction of acceleration of an object moving in a circle?
Answer(B)
Towards the center of the circle.
16
Answer(B)
The force of gravity acting on an object.
17
What is the acceleration due to gravity on Earth?
18
If an object moves 10 meters in 5 seconds, what is its speed?
19
What is the definition of impulse?
20
What is the unit of measurement for momentum?
21
What does Newton's Second Law of Motion state about the relationship between force, mass, and acceleration?
Answer(C)
Force is directly proportional to acceleration.
22
When a satellite orbits the Earth, what is the force that provides the centripetal force?
Answer(B)
The Earth's gravitational pull.
23
What is changing when an object moves at constant speed in a circle?
24
If an object is moving with constant velocity, what can be said about its acceleration?
25
Which of the following is the formula for average speed?
26
What determines the magnitude of the gravitational force between two objects?
Answer(C)
The product of their masses and the distance between them.
27
Which of these will increase the air resistance on a moving object?
Answer(C)
Increasing the speed of the object.
28
Which of the following are vector quantities?
29
Which statements are true about inertia?
30
What is the formula for calculating resultant force?
31
If an object has zero acceleration, what can we say about its motion?
32
How does the presence of air affect the motion of a falling object?
Answer(C)
It decreases the object's speed.
33
Which statement best describes the relationship between impulse and momentum?
Answer(A)
Impulse is the cause of a change in momentum.
34
What are the units of weight?
35
Which of the following scenarios demonstrates Newton's Third Law?
Answer(C)
A rocket launching into space.
36
Which of the following are examples of forces?
37
What happens to an object in freefall?
Answer(B)
It accelerates downwards due to gravity.
38
Which of the following describes the relationship between weight and gravitational field strength?
Answer(C)
Weight is equal to mass times gravitational field strength.
39
What does the phrase “change in velocity” means?
Answer(C)
The difference between final and initial velocity.
40
What would the ticker tape show when the trolley has constant velocity?
41
Which of the following is an example of balanced forces?
Answer(C)
A parachute descending at constant velocity.
42
What does the symbol 'Δ' stand for in the acceleration formula?
43
How is the resultant force calculated when forces act in the same direction?
44
What must happen for an object to accelerate?
Answer(C)
A net force must act on the object.
45
Answer(B)
Acceleration due to gravity
46
Which of the following will increase the friction between two surfaces?
Answer(C)
Increasing the force pressing the surfaces together.
47
What are the units for speed?
48
Which is a correct example of how to write a velocity?
49
What is the speed of a car in the car-accelerating scenario that has traveled 8.25m in 0.50s?
50
What can be deduced from the analysis of the ticker-tape?
