What is the distance of the star (in km) from which a light takes 3 x 109 year to reach the earth? The speed of light, is C = 3 x 108 m/s.
  • 2.888 × 1022 km
  • 2.388 × 1022 km
  • 2.838 × 1022 km
  • 2.808 × 1022 km
The ratio of displacement to distance is
  • Greater than 1
  • Either less than or equal to 1
  • Less than 1
  • Equal to 1
The magnitude of displacement is equal to minimum possible distance between two positions.
  • True
  • False
  • sometimes true and sometimes false
  • can’t predict
Which of the following statements about distance is true:
  • It always decreases with time
  • it can never be less than magnitude of displacement
  • It cannot be positive
  • It cannot be zero
Which of the following quantity remains constant during the uniform circular motion?
  • Velocity
  • Angular acceleration
  • Speed
  • Angular velocity
The magnitude of average velocity is equal to the average speed if the motion of an object is along a straight line and in the same direction.
  • True
  • can’t predict
  • False
  • sometimes true and sometimes false
A particle is moving along a circle of radius R such that it completes one revolution in 40 seconds. What will be the displacement after 2 minutes 20 seconds?
  • 6R
  • 2R
  • 4R
  • R
The numerical ratio of velocity to speed is:
  • Either less than or equal to 1
  • Equal to 1
  • Greater than 1
  • Less than 1
Two escalators move people up and down between floors of a shopping mall at the same rate, either up or down. What of the following statements regarding the motion of the escalators is true?
  • The escalators have different speeds and velocities.
  • The escalators have the same velocity, but different speeds.
  • The escalators have the same speed and velocity.
  • The escalators have the same speed, but different velocities.
A coordinate system that enables us to describe the position of a body in space at any instant of time is called
  • Reference frame
  • Intersection point
  • Origin
  • Reference point
The displacement of a particle starting from rest (at t = 0) is given by s = 6t2-t3 The time in seconds at which the particle will attain zero velocity again, is
  • 6
  • 4
  • 2
  • 8
The displacement of an object may be
  • positive
  • negative
  • positive, negative or zero
  • positive or zero
If a body does not change its direction during the course of its motion, then
  • Displacement is greater than path length
  • Path length and displacement are equal
  • Path length is greater than displacement
  • Path length is either greater or equal to displacement
36 km/h is equal to:
  • 129. 6 ms-1
  • 600 ms-1
  • 10 ms-1
  • 12.96 ms-1
The ratio of magnitude of velocity and speed is always:
  • Equal to or less than one
  • Less than one
  • One
  • Equal to or greater than one
Suppose our school is 1 km away from our house, and we go to school in the morning, and in the afternoon we come back. Then, the total displacement for the entire trip is
  • 1 km
  • 2km
  • -1 km
  • 0 km
An object is in uniform motion along a straight line if it
  • moves equal distances in equal intervals of time.
  • does not move
  • moves equal distances in unequal intervals of time.
  • moves unequal distances in unequal intervals of time
A man starts from his home with a speed of 4 km/h on a straight road up to his office 5 km away and returns to home, then the path length covered is
  • -5 km
  • 5 km
  • zero
  • 10 km
Which of the following is not an example of a rectilinear motion?
  • A car moving in a circular path
  • A rain drop falling towards the earth
  • A car moving on a straight road
  • A wooden block sliding down the inclined plane
0 h : 0 m : 1 s

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