All questions of Motion in a Straight Line for JEE Exam

• a)
  -5 km
• b)
  5 km
• c)
  0
• d)
  10 km

• a)
  129. 6 ms^-1
• b)
  600 ms^-1
• c)
  10 ms^-1
• d)
  12.96 ms^-1

• a)
  Equal to or less than one
• b)
  Less than one
• c)
  One
• d)
  Equal to or greater than one

• a)
  4 m
• b)
  12 m
• c)
  16 m
• d)
   8 m

• a)
  A car moving on a straight road.
• b)
  A rain drop falling towards the earth.
• c)
  A car moving in a circular path.
• d)
  A wooden block sliding down the inclined plane.

• a)
  6R
• b)
  2R
• c)
  4R
• d)
  R

• a)
  Stone of lower mass
• b)
  Stone of higher mass
• c)
  Both will rise to the same height
• d)
  Information given is insufficient

• A:
  40 m/s
• B:
  25 m/s
• C:
  60 m/s
• D:
  30 m/s

• a)
  1 km ⁄ h
• b)
  25 km ⁄ h
• c)
  60 km ⁄ h
• d)
  None of the above

• a)
  Displacement is greater than path length.
• b)
  Path length and displacement are equal.
• c)
  Path length is greater than displacement.
• d)
  Path length is either greater or equal to displacement.

• a)
  6
• b)
  7
• c)
  3
• d)
  4

• a)
  Either less than or equal to 1
• b)
  Equal to 1
• c)
  Greater than 1
• d)
  Less than 1

• a)
  
• b)
  
• c)
  
• d)
  

• a)
  The velocity is zero and the acceleration is pointing down
• b)
  The velocity and acceleration are both zero
• c)
  The acceleration is zero and the velocity is pointing up
• d)
  The acceleration is zero and the velocity is pointing down

• a)
  Greater than 1
• b)
  Either less than or equal to 1
• c)
  Less than 1
• d)
  Equal to 1

• a)
  6
• b)
  4
• c)
  2
• d)
  8

• a)
  Same acceleration
• b)
  Same velocity
• c)
  Different velocity
• d)
  Different acceleration

The coordinates of a moving particle at any time t are given by  and .The speed of the particle at time t is given by         [AIEEE 2003]

• a)
   
• b)
   
• c)
   
• d)
   

The velocity-displacement graph of a particle moving along a straight line is shown

The most suitable acceleration-displacement graph will be

• a)
   
• b)
  
• c)
  
• d)
  

• a)
  Positive
• b)
  Both of these depending upon the initial velocity
• c)
  Constant
• d)
  Negative

• a)
  The velocity is zero
• b)
  The velocity is decreasing
• c)
  The velocity is increasing
• d)
  The velocity is constant but non zero

• a)
  12 m 
• b)
   18 m
• c)
   24 m
• d)
  6 m

• a)
  1 km
• b)
  2 km
• c)
  -1 km
• d)
  0 km

• a)
  v
• b)
  v/8
• c)
  v/4
• d)
  v/2

• a)
  v = a.t⁴/4
• b)
  v = a.3/t²
• c)
  v = a.3t²
• d)
  v = 3t²

• a)
  u cosθ
• b)
  u  
• c)
  u sinθ
• d)
  (u cosθ -u)  

• A:

   Its velocity is constant

• B:

  Its acceleration is constant

• C:

   Its kinetic energy is constant

• D:

   It moves in straight line

The answer is c.

• a)
  The escalators have different speeds and velocities.
• b)
  The escalators have the same velocity, but different speeds.
• c)
  The escalators have the same speed and velocity.
• d)
  The escalators have the same speed, but different velocities.

• a)
  is decreasing in equal intervals of time
• b)
  is increasing in equal intervals of time
• c)
  is equal in equal intervals of time.
• d)
  is equal in not equal intervals of time.

• a)
  uniformly accelerated motion
• b)
  non uniformly accelerated motion
• c)
  uniform motion
• d)
  none of the above

• a)
  During downward motion
• b)
  When the ball comes to rest
• c)
  During upward motion
• d)
  When the boy catches the ball

 Figure shows the displacement – time graph of a particle moving along X – axis.

• a)
  particle moves at a variable velocity
• b)
  particle moves at a constant velocity upto a time t₀ and then stops
• c)
  particle moves at a constant velocity upto a time t₀ and then velocity increases
• d)
  particle moves at increasing velocity upto t₀ and then velocity becomes constant

• a)
  1:10
• b)
  1:1
• c)
  1:100
• d)
  10:1

• a)
   ms²
• b)
  ms
• c)
  ms^-2
• d)
  m

• a)
  Distance
• b)
  Velocity
• c)
  Speed
• d)
  Displacement

• a)
  7
• b)
  9
• c)
  12
• d)
  8

• a)
  a-t
• b)
  v-t
• c)
  x-v
• d)
  x-t

Speed time graph of a particle moving along a fixed direction is shown in the figure below. The average speed of the particle over the interval: t = 0 s to 10 s.

• a)
  16 m/s
• b)
  6 m/s
• c)
  10 m/s
• d)
  0.6 m/s

• a)
  8 s  
• b)
  4 s  
• c)
  2 s  
• d)
  6 s 

• a)
   
• b)
  
• c)
   
• d)
  Their velocities depend on their masses

• a)
  distance is a scalar, velocity is a vector , acceleration is a vector.
• b)
  distance is a vector, velocity is a scalar, acceleration is a vector.
• c)
  distance is a vector, velocity is a vector, acceleration is a vector.
• d)
  distance is a scalar, velocity is a vector, acceleration is a scalar.

• a)
  resultant speed of child and rain
• b)
  resultant speed of rain and child
• c)
  relative speed of rain with respect to child
• d)
  relative speed of child with respect to rain

• a)
  26.67 kmhr^-1
• b)
  33.34 kmhr^-1
• c)
  50 kmhr^-1
• d)
  30 kmhr^-1

• a)
  1 cm 
• b)
  2cm
• c)
  3cm
• d)
  4cm

The velocity displacement graph of a particle moving along a straight line is shown. The most suitable acceleration-displacement graph will be -

                           

• a)
   
• b)
   
• c)
   
• d)
   

 A boy playing  on the roof  of a 10 m high building throws a ball  with a speed of 10m/s at an angle of 30º with the horizontal. How far from the throwing point will the ball be at the height of 10 m from the ground ?

• a)
  5.20m
• b)
  4.33m
• c)
  2.60m
• d)
  8.66m

• a)
  Displacement is not constant
• b)
  motion is non-uniform.
• c)
  acceleration is not constant
• d)
  velocity is not constant

• a)
  displacement
• b)
  deceleration
• c)
  velocity
• d)
  acceleration

The velocity of a particle is . If its position is x = 0 at t = 0, then its displacement after unit time (t = 1) is 

[AIEEE 2007]

• a)
  
• b)
  
• c)
   
• d)
   

• a)
  20 m
• b)
  40 m
• c)
  60m 
• d)
  80 m