(Set 1) Motion

Q1. 
For an object, the state of rest is considered to be the state of ...........
  1. increasing
  2. decreasing
  3. inverse
  4. zero

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Correct Answer : D

Q2. 
An object travels 20 m in 6s and then another 30 m in 4s. what is the average speed of the object?
  1. 8 m/s
  2. 6 m/s
  3. 5 m/s
  4. 7 m/s

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Correct Answer : C

Q3. 
After meeting with an accident, a train starts moving at 2/3 its speed. Due to this, it is 45 min late. Find the original time of the journey beyond the point of the accident.
  1. 90 min
  2. 120 min
  3. 45 min
  4. 135 min

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Correct Answer : A

Q4. 
If the distance s covered by a moving car in rectilinear motion with a speed v in time t is given by s = vt, then the car undergoes
  1. a uniform acceleration
  2. o non-uniform acceleration
  3. a uniform velocity
  4. a non-uniform velocity

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Correct Answer : C

Q5. 
which of the following statements is false?
  1. A body can have zero velocity and still be accelerated.
  2. A body can have a constant velocity and still have a varying speed.
  3. A body can have a constant speed and still have varying velocity.
  4. The direction of the velocity of a body can change when its acceleration is constant.

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Correct Answer : B

Q6. 
A car start from Bengaluru, goes 50 km in a straight line towards South, immediately turns around and returns to Bengaluru. The time taken for this round trip is 2h. The magnitude of the average velocity of the car for this round trip
  1. is zero
  2. is 50 km/h
  3. is 25 km/h
  4. cannot be calculated without knowing acceleration

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Correct Answer : A

Q7. 
As the object covers unequal distances in equal intervals of time, it is said to be in .................... motion.
  1. uniform
  2. linear
  3. non-uniform
  4. equilibrium

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Correct Answer : C

Q8. 
The rate of change of displacement with time is called as .......
  1. force
  2. acceleration
  3. retardation
  4. velocity

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Correct Answer : D

Q9. 
During .............. motion of an object along a straight line, the change in velocity of the object for any time interval is zero.
  1. linear
  2. translation
  3. equilibrium
  4. uniform

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Correct Answer : D

Q10. 
Which one of the following does not match the group?
  1. Speed
  2. Time
  3. Mass
  4. Acceleration

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Correct Answer : C

Q11. 
In negative acceleration, the velocity of a body .............
  1. is zero
  2. increases
  3. decreases
  4. remains constant

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Correct Answer : C

Q12. 
........... is the change in velocity per unit time,
  1. Acceleration
  2. Momentum
  3. Force
  4. Inertia

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Correct Answer : A

Q13. 
For a body moving with uniform acceleration its final velocity equals .............................
  1. average velocity - initial velocity
  2. 2 x average velocity - initial velocity
  3. 2 x average velocity + initial velocity
  4. average velocity + initial velocity

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Correct Answer : B

Q14. 
Find the acceleration (in m/s^2) of a body which accelerates from 10 m/s to 20 m/s in 4 second.
  1. 7.5
  2. 5
  3. 15
  4. 2.5

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Correct Answer : D

Q15. 
If an object moves with constant velocity, then which one of the following statement is not correct?
  1. Its motion is along a straight line.
  2. Its speed changes with time.
  3. Its acceleration is zero.
  4. Its displacement increases linearly with time.

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Correct Answer : D

Q16. 
A passenger in a moving train tosses a five rupees coin. If the coin falls behind him, then the train must be moving with a uniform
  1. acceleration
  2. deceleration
  3. speed
  4. velocity

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Correct Answer : A

Q17. 
In the equation of motion v = u + at, u represents ...............
  1. initial velocity
  2. final velocity
  3. kinetic energy
  4. potential energya

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Correct Answer : A

Q18. 
The first equation of motion gives the relation between
  1. position and time
  2. velocity and time
  3. position and velocity
  4. velocity and acceleration

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Correct Answer : B

Q19. 
The second equation of motion gives the relation between
  1. velocity and time
  2. position and time
  3. position and velocity
  4. velocity and acceleration

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Correct Answer : B

Q20. 
The motion of a freely falling body is an example of ............. accelerated motion.
  1. non-uniformly
  2. uniformly
  3. uniquely
  4. specially

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Correct Answer : B

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