A level Newton's Laws of Motion Quiz 1

15 Questions

Quiz Description

Here in this physics quiz, we shall be looking at the study of all Newton’s laws of motion which are one of the most fundamental laws to know in Physics. We are going to look at all of the laws from the first law to the third law and if you are a physics student then this quiz is meant for you.

Newton’s first law of motion. This law states that a body at rest will continue to be at rest or a body in uniform motion will continue to be at rest or in uniform motion unless an external force acts on it.

Newton’s second law of motion. It states that the net force acting on a body is directly proportional to its acceleration.

Newton’s third law states that if a body, say, A, exerts a force on another body say B, then B exert an equal but opposite force on the body A

It is very important to know these fundamental laws as they are mostly used in other aspects of physics and if you're facing difficulties, don’t bother, this quiz is here to guide you. 

Good luck. 

1:

Force exerted on a body changes it's


Correct
  • 1:
    Direction of motion
  • 2:
    Momentum
  • 3:
    Kinetic energy
  • 4:
    All the above
2:

There are two statements
Statement A :Rate of change of momentum corresponds to force
Statement B :Rate of change of momentum corresponds to Kinetic Energy
Which one of the following is correct?


Correct
  • 1:
    A only
  • 2:
    B only
  • 3:
    Both A and B are correct
  • 4:
    Both A and B are wrong
3:

A truck and car are moving on a plane road with same kinetic Energy. They are brought to rest by application of brakes which provide equal retarding forces. Which one of the following statements is true?


Correct
  • 1:
    Distance traveled by truck is shorter then car before coming to rest
  • 2:
    Distance traveled by car is shorter then truck before coming to rest
  • 3:
    Distance traveled depends on individual velocity of both the vehicles
  • 4:
    Both will travel same distance before coming to rest
4:

A block A of mass m1 is released from top of smooth inclined plane and it slides down the plane. Another block of mass m2 such that m2 > m1is dropped from the same point and falls vertically downwards. Which one of the following statements will be true if the friction offered by air is negligible?


Correct
  • 1:
    Both blocks will reach ground at same time
  • 2:
    Both blocks will reach ground with the same speed
  • 3:
    speed of both the blocks when they reach ground will depend on their masses
  • 4:
    Block A reaches ground before block B
5:

There are two statements
Statement A Newton’s first law in valid from the pilot in an aircraft which is taking off
Statement B Newton’s first law in valid from the observer in a train moving with constant velocity
Which of the following is correct


Correct
  • 1:
    A only
  • 2:
    B only
  • 3:
    Both A and B are correct
  • 4:
    Both A and B are wrong
6:

Choose the correct alternative


Correct
  • 1:
    The acceleration of a moving particle is always in the direction of its velocity
  • 2:
    Velocity and acceleration vectors of a moving particle may have any angle between 0 and 360 between them
  • 3:
    Velocity and acceleration vectors of a moving particle may have any angle between 0 and 180 between them
  • 4:
    If the acceleration vector is always perpendicular to the velocity vector of a moving particle, the velocity vector does not change
7:

A body of mass m moves along the positive x-axis, it starts at velocity v0 at t = o and it is the origin initially. It is acted by the force such that
F = -kv

i) find the time in which it will come to rest


Correct
  • 1:
    t → ∞
  • 2:
    t = kt/m
  • 3:
    t = mt/k
  • 4:
    none of the above
8:

ii) Find the velocity of body as a function of time


Correct
  • 1:
    Vo exp (-kt/m)
  • 2:
    Vo exp (-mt/k)
  • 3:
    Vo exp (-t)
  • 4:
    none of the above
9:

iii) Find the value of x at which it velocity become 0


Correct
  • 1:
    mVo/k^2
  • 2:
    m/kVo
  • 3:
    mVo/k
  • 4:
    none of the above
10:

iv) Find the velocity as a function of distance


Correct
  • 1:
    Vo + kx/m
  • 2:
    Vo - kx/m
  • 3:
    Vo - x/m
  • 4:
    none of the above
11:

A 6 kg object is subject to three forces

F1 = 20i + 30j N
F2 = 8i - 50j N
F3 = 2i + 2j N

i) find the acceleration of object


Correct
  • 1:
    5i + 3j
  • 2:
    5i - 3j
  • 3:
    3i + 5j
  • 4:
    3i - 5j
12:

Which of the following expression is correct if at t = 0, object is at origin and velocity is Vo = i + j


Correct
  • 1:
    r = i(2.5 t^2 + t) + j(t - 1.5t^2)
  • 2:
    r = i(2.5 t^2 - t) + j(t + 1.5t^2)
  • 3:
    r = it - jt^2
  • 4:
    none of the above
13:

A boy pushes a mass with a force F. Coefficient of friction between body and floor is μm and between boy shoe and floor is μB. There mass are M(block) and m(boy) respectively.

i) What maximum force boy can apply without slipping


Correct
  • 1:
    μmmg
  • 2:
    μmMg
  • 3:
    μBmg
  • 4:
    none of the above
14:

ii) What is the condition required to move the block without slipping


Correct
  • 1:
    μB/μm > M/m
  • 2:
    μB/μm > m/M
  • 3:
    μB/μm < M/m
  • 4:
    μB/μm < m/M
15:

A particle of weight W resting a smooth(frictional less) inclined plain AB with the help of  force F acting on the particle at angle θ with the line AB
find the force F and normal reaction


Correct
  • 1:
    (Wcosθ)/sinα, [Wcos(α - θ)]/cosθ
  • 2:
    (Wsinα)/cosθ, [Wcos(α + θ)]/cosθ
  • 3:
    (Wsinα)/cosθ, [Wsin(α + θ)]/cosθ
  • 4:
    none of the above

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A level Newton's Laws of Motion Quiz 1
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