Physics for IGCSE & O level - Forces And Motion (Section 3)
2
What does force cause an object to do?
3
How do we describe a vector?
پاسخ دهید(C)
By a size and a direction.
4
If an object is moving in a circle at a constant speed, what is changing?
5
What is the value of g (gravitational field strength) on Earth?
6
What keeps a satellite in orbit around the Earth?
7
What does the motion look like on the distance-time graph if the car is stopped?
پاسخ دهید(A)
A straight horizontal line.
8
If a car doubles its speed, what happens to the stopping distance?
9
According to Newton's Second Law, force is directly proportional to which of the following?
10
Which quantity decreases when in an in-elastic collision?
11
In free fall, the acceleration is primarily caused by which force?
12
What are examples of friction?
13
If an object is accelerating, which of the following statements are true?
14
What will be the shape of the distance-time graph of a car moving with a constant speed?
پاسخ دهید(C)
A straight line with a constant slope
15
Which formula represents the relationship between distance (d), speed (s), and time (t)?
16
If an object is thrown upward, what type of direction the force of gravity acts on it?
17
What happens to the object's acceleration when the air resistance equals to the gravitational force?
پاسخ دهید(B)
It moves at a constant velocity.
18
In a velocity-time graph, what does the area under the curve represent?
19
What does the term 'impulse' represent in physics?
20
What does the term 'retardation' refer to in physics?
21
Which law of motion relates force and rate of change of momentum?
22
Which of the following is a vector quantity?
23
Which of the following is equivalent to the change in momentum?
24
What is the formula for calculating impulse?
25
Which of the following is essential for a rocket's propulsion in space?
26
Which of the following represents a constant acceleration in a speed-time graph?
پاسخ دهید(B)
A straight, diagonal line.
28
What does the area under a speed-time graph represent?
29
What does a horizontal line represent on a distance-time graph?
31
What is the correct unit for measuring velocity?
32
If a car travels 60 meters in 2 seconds, what is its speed?
33
What are the components of the force?
34
How is average acceleration calculated?
پاسخ دهید(B)
Change in velocity/change in time
35
What force is responsible for keeping the planets in orbit around the sun?
36
What is the name of the unit used for measuring weight?
37
What is the unit for the change in velocity?
38
Which of these is a component of a vector?
39
If an object’s velocity is constant, what must be zero?
40
What is the direction of acceleration due to gravity?
41
What is the relationship between speed and distance traveled?
42
If the force acting on an object is zero, what is the object's acceleration?
43
A car is going around a curve. Which direction is the force acting on the car?
پاسخ دهید(C)
Toward the center of the circle.
44
In the context of forces, what are action-reaction pairs?
پاسخ دهید(C)
Forces that act on different objects.
45
Which direction does the force on the ground from a person standning on it point?
46
Which of Newton's laws explains why a swimmer pushes water backward to move forward?
47
What is a ticker tape used for in physics experiments?
پاسخ دهید(A)
Measuring the acceleration of a trolley
48
What does the ticker-tape experiment allow us to analyze?
49
In the equation 'change in momentum = force x time', what is the term 'force x time' called?
50
What does a curved line on a distance-time graph mean?
