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Test: Force - Class 9 MCQ


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10 Questions MCQ Test Science Class 9 - Test: Force

Test: Force for Class 9 2024 is part of Science Class 9 preparation. The Test: Force questions and answers have been prepared according to the Class 9 exam syllabus.The Test: Force MCQs are made for Class 9 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Force below.
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Test: Force - Question 1

A force is defined as a

Detailed Solution for Test: Force - Question 1

Force is a push or a pull that changes or tends to change the state of rest or uniform motion of an object or changes the direction or shape of an object

Option C is correct.

Test: Force - Question 2

One way that you can recognize that a force is acting on an object:

Detailed Solution for Test: Force - Question 2

The correct option is A

is to note any change in the objects state of motion.

 

One way that you can recognize that a force is acting on an object is to note any change in the objects state of motion.

Test: Force - Question 3

A 1-kg object is lying on the ground. An unbalanced force of magnitude 1 N is applied to the object. Which of these options explains the motion of the object as a result of the acting force?

Detailed Solution for Test: Force - Question 3

The correct option is A

The object will accelerate in the direction of the applied force.

 

The object will accelerate in the direction of the applied force.

Test: Force - Question 4

If an object experiences a net zero unbalanced force, then the body:

Detailed Solution for Test: Force - Question 4

If an object experiences a net zero unbalanced force, then the body moves with a constant velocity, or if it was at rest, then it continues to remain at rest.

Option D is correct.

Test: Force - Question 5

Identify from the following, the case where balanced force acts on it.

Detailed Solution for Test: Force - Question 5

The correct option is A

A person resting on an armchair.

 

A person in the armchair is at rest, not moving. Hence, the forces are balanced

Test: Force - Question 6

 A stone of 1 kg is thrown with a velocity of 20 m s–1 across the frozen surface of a lake and comes to rest after travelling a distance of 50 m. What is the force of friction between the stone and the ice?

Detailed Solution for Test: Force - Question 6

Here, m = 1kg, = 20 ms-1v = 0, s = 50m, F = ?

From v2 - u2 = 2as

0 - (20)= 2a x 50 = 100a

a = -400/100

a = -4 ms-2

∴ F = ma

F = 1 (-4)

F = -4 N

Negative sign indicates that force of friction is opposing the motion of the ball.

Test: Force - Question 7

__________ is a force, which always opposes the motion of one body over the other body in contact with it

Detailed Solution for Test: Force - Question 7

Friction is a a force that comes into play when two surfaces come in contact with each other. The frictional force acts in the opposite direction of the motion of the object. The force of friction opposes the relative motion between the surfaces of two moving objects.

Option D is correct.

Test: Force - Question 8

If an object moves with a uniform velocity we can conclude that

Detailed Solution for Test: Force - Question 8

There is no unbalanced force. There might be a number of forces acting on the body but these forces are adding up to zero.

Option B is correct.

Test: Force - Question 9

When a force is exerted on an object, it can change its:

Detailed Solution for Test: Force - Question 9

1.for state - if we exert high force on ice it slowly start converting into water I.e liquid thus state is change by force. 

2.for position - if we push a box it change its position. thus force also change position. 

3. for shape - if we press a clay it will change its shape so we can conclude that force change shape also. 

Therefore Option D is correct.

Test: Force - Question 10

SI unit of force is kg ms-2. This unit is also known as:

Detailed Solution for Test: Force - Question 10

Kg ms-2 is also called Newton as unit of force is newton.

Option D is correct.

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