# IIT JEE/IIT JEE Description Of Motion In One Dimension part1 Sample Test,Sample questions

1.7.5s

2.10s

3.5s

4.None of these

1.2.62 m/s

2.4.6 m/s

3.3.57 m/s

4.1.414 m/s

## Question: `A ball is released from the top of a tower of height h metre. It takes T seconds to reach the ground. What is the position of the ball in T/3 seconds?`

1.h/9 metre from the ground

2.7h/9 metre from the ground

3.8h/9 metre from the ground

4.17 h/9 metre from the ground

## Question: `A beaker containing water is balanced on the pan of a common balance. A solid of specific gravity one and mass 5g is tied on the arm of the balance and immersed in water contained in the beaker the scale pan with the beaker:`

1.goes up

2.goes down

3.remains unchanged

4.none of these

## Question: `A body is acted upon by a constant force. What is the nature of the displacement-time graph?`

1.Straight line

2.Symmetric parabola

3.Asymmetric parabola

4.Rectangular hypherbola

## Question: `A body is impaired motion rest to move in a straight line. If it is then obstructed by an opposite force then:`

1.the body may necessarily change direction

2.the body is sure to slow down

3.the body will necessarily continue to move in the same direction at the same speed

4.None of the above

## Question: `A body moving with uniform velocity is in equilibrium. This statement is:`

1.TRUE

2.FALSE

3.may be true or false

4.none of these

1.4 s

2.3.26 s

3.3.48 s

4.2.828 s

1.1 s

2.2 s

3.4 s

4.16 s

## Question: `A bucket is placed in the open where the rain is falling vertically. If a wind begins to blow at double at velocity of the rain how will be rate of filling of the bucket change?`

1.Remain unchanged

2.Doubled

3.Halved

4.Become four times

1.x

2.2x

3.3x

4.4x

1.7 m/s

2.17 m/s

3.23 m/s

4.None of these

1.60 km/h

2.30 km/h

3.120 km/h

4.none of these

1.12m

2.18m

3.6m

4.16m

1.2m

2.3m

3.4m

4.6m

1.0 m

2.0.2 m

3.0.4 m

4.0.8 m

1.10m 20m 10m

2.15m 20m 15m

3.5m 15m 20m

4.5m 10m 20m

1.1.5 m

2.2.5 m

3.4 m

4.none of these

## Question: `A particle is moving on a straight line path with constant acceleration directed along the direction of instantaneous velocity. Which of following statements are false about the motion of particle?`

1.Particle may reverse the direction of motion

2.Distance covered is not equal to magnitude of displacement

3.The magnitude of average velocity is less than average speed

4.All of the above

1.20 m/s

2.4.2 m/s

3.9.8 m/s

4.none of these

1.15 cm/s

2.20 cm/s

3.10 cm/s

4.none of these

## Question: `A particle moves along a circular path with constant speed. What is the nature of its acceleration?`

1.It is zero

2.It is uniform

3.Its direction changes

4.ts magnitude changes

## Question: `A particle moves along a straight line path After some time it comes to rest The motion is with constant acceleration whose direction with respect to the direction of velocity is:`

1.positive throughout motion

2.negative throughout motion

3.first position then negative

4.first negative then positive

1.3 m/s

2.4 m/s

3.zero

4.8 m/s

## Question: `A particle starts with a velocity of 2 m/s and moves in a straight line with a retardation of 0.1 m/second square. The time that it takes to describe 15m is:`

1.10s in its backward journey

2.30s in its forward journey

3.10s in its forward journey

4.both B and C are correct

## Question: `A passenger in a moving train tosses a coin. If the coin falls behind him the train must be moving with:`

1.an acceleration

2.a deceleration

3.an uniform speed

4.any of these

1.27 s

2.72 s

3.18 s

4.36 s

1.6m

2.4 m/s

3.8 m

4.10 m

## Question: `A river is flowing from west to east at a speed 15 m/s. A boy on the south bank of the river capable of swimming at 30 m/s in still water wants to swim cross the river in the shortest time. He should swim in direction?`

1.due north

2.30 degree east of north

3.30 degree west of north

4.60 degree east of north

1.5s

2.6s

3.7s

4.8s

1.44.1 m

2.58.5 m

3.73.5 m

4.98 m

1.6 m

2.60 m

3.40 m

4.100 m

1.52 km

2.50 km

3.48 km

4.100 km

## Question: `A train is moving eastwards with a velocity of 10 m/s On a parallel track another train passes with a velocity 15 m/s eastwards To the passengers in the second train the first train will appear to be moving with a velocity:`

1.5 m/s westwards

2.5 m/s eastwards

3.20 m/s westwards

4.25 m/s eastwards

1.12s

2.8s

3.15s

4.10s

1.4.8 s

2.8 s

3.10 s

4.12 s

1.20m

2.40m

3.60m

4.80m

## Question: `An object moves starting from rest through a resistive medium such that its acceleration is related to velocity as a = 3 ? 2v. Then:`

1.the terminal velocity is 1.5 unit

2.the terminal velocity is 3 unit

3.the slope of a-v graph is not constant

4.initial acceleration is 2 unit

1.60

2.40

3.50

4.120

1.400m

2.880m

3.1500m

4.30 km

1.h/3

2.2h/2

3.h/2

4.5h/3

1.1cm

2.2cm

3.3cm

4.4cm

## Question: `If the acceleration of a particle is the function of distance as a = f (x) then:`

1.the velocity must be the function of displacement

2.the velocity versus displacement graph cannot be a straight line

3.the velocity may be the function of displacement

4.the acceleration versus displacement graph may be straight line

## Question: `If the displacement of particle is zero then what can we say about its distance covered?`

1.It must be zero

2.It can not be zero

3.It is negative

4.It may or may not be zero

## Question: `If the time-displacement graph of a particle is parallel to the time-axis the velocity of particle is:`

1.zero

2.infinity

3.variable

4.equal to its acceleration numerically

1.10.66 m

2.20m

3.20m

4.2m

## Question: `Mark correct option or options.`

1.Displacement may be equal to the distance

2.Displacement must be in the direction of the acceleration of the body

3.Displacement must not be in the direction of velocity

4.None of the above

1.2a/v

2.a/v

3.2a/2v

4.a/2v

## Question: `Speed is to velocity as:`

1.centimeter is to metre

2.force is to torque

3.velocity is to acceleration

4.distance is to displacement

1.1:01

2.1:04

3.1:08

4.1:16

## Question: `The numerical ratio of velocity to speed is:`

1.less than 0

2.less than 1

3.either greater than or equal to 1

4.either less than or equal to 1

1.v/a

2.2v/a

3.v/2a

4.va

## Question: `The time-displacement graph of a moving particle is a straight line Then:`

1.its velocity may be uniform

2.its acceleration may be uniform

3.both its velocity and acceleration may be uniform

4.its acceleration may be variable

1.6m/s

2.4m/s

3.2m/s

4.1m/s

1.24 s

2.40 s

3.60 s

4.80 s

1.5 m/s

2.3 m/s

3.4 m/s

4.none of these

## Question: `Two particles start from rest simultaneously and are equally accelerated Throughout the motion the relative velocity of one wrt other is:`

1.zero

2.non-zero and directed parallel to acceleration

3.non-zero and directed opposite to accelerationdirected perpendicular to the acceleration

4.none of these

1.Speed

2.Acceleration

3.Displacement

4.none of these

## Question: `Which of the following in not an example of linear motion?`

1.A book at rest

2.A body in uniform circular motion

3.Wheel rotating at uniform speed on road

4.A body rolling down an inclined plane

## Question: `Which of the following statements is correct?When air resistance is not negligible the time ascent is greater than the time of descent`

1.When air resistance is not negligible time of ascent is less than the time of descent

2.When air resistance is not negligible the time ascent is greater than the time of descent

3.When air resistance is not negligible the time of ascent is lesser than the time of descent

4.none of these

## More MCQS

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