# IIT JEE/IIT JEE Motion In Two And Three Dimensions part1 Sample Test,Sample questions

1.6%

2.7%

3.8%

4.9%

## Question: `3.Which of the following does not affect the maximum height attained by the projectile?`

1.Magnitude of initial velocity

2.Acceleration of the projectile

3.Angle of projection

4.Mass of the projectile

## Question: `A ball is projected upwards Its acceleration at the highest point is`

1.infinite

2.zero

3.directed upwards

4.directed downwards

1.0.5

2.1

3.2

4.4

1.1:02

2.2:01

3.1:01

4.1:cos?

1.2.5 m

2.5 m

3.7.5 m

4.10 m

1.36R

2.R/36

3.R/16

4.6R

1.20 m/s

2.15 m/s

3.16 m/s

4.none of these

1.5m

2.10m

3.20m

4.200m

1.9.8/4 m

2.9.8/8 m

3.9.8 m

4.19.6 m

## Question: `A heavy and a lighter body are dropped from the top of a tower Which will reach the ground first?`

1.Lighter one

2.Heavier one

3.Both will reach simultaneously

4.Cannot be predicted

## Question: `A heavy stone is thrown from a cliff of height h in a given direction. The speed with which it hits the ground (air resistance may be neglected):`

1.must depend on the speed of projection

2.must be larger than the speed of projection

3.must be independent of the speed of projection

4.A and B both are correct

## Question: `A hunter takes an aim at a monkey sitting on a tree and fires a bullet. Just when the bullet leaves the barrel of the gun it so happens that the monkey begins to fall freely. The bullet will`

1.go above the monkey

2.go below the monkey

3.may or may not hit the monkey. It will depend upon the velocity of the bullet

4.hit the monkey

1.200m

2.100m

3.50m

4.25m

1.parabola

2.circle

3.hyperbola

4.rectangle

1.15 s

2.2.0 s

3.20 s

4.1.5 s

1.2.65 s

2.15.3 s

3.1.0 s

4.12.0 s

## Question: `A passenger traveling in a train moving with constant velocity drops a stone from the window. To the passenger the path of projectile will appear to be:`

1.straight line

2.parabola

3.arc of a circle

4.elliptical

1.45 degree

2.30 degree

3.60 degree

4.None of these

1.800 J

2.400 J

3.200 J

4.100 J

1.(400 100)

2.(200 100)

3.(400 200)

4.(200 200)

1.g/2

2.g

3.3g/2

4.2g

1.g

2.2g

3.3g

4.4g

1.6.32 J

2.8.40 J

3.16.32 J

4.5.76 J

## Question: `A stone is projected upwards and it returns to ground on a parabolic path Which of the following remains constant?`

1.Speed of the ball

2.Horizontal component of velocity

3.Vertical component of velocity

4.None of the above

1.3 s

2.2 s

3.1.5 s

4.1 s

1.8s

2.6s

3.4s

4.10s

1.67m

2.335m

3.1.34m

4.None

## Question: `An object is dropped through the window of a fast running train. Then:`

1.the object falls down vertically

2.the object moves straight horizontally

3.the object follows an elliptical path

4.to a man standing near the track path of object will appear to be part of parabola

## Question: `An oblique projectile has the smallest speed on its trajectory when`

1.it is at the highest point

2.it is at the point of projection

3.it hits the ground

4.the horizontal distance traveled by it is one-eight of the maximum height.

## Question: `At the top of the trajectory of a projectile the directions of its velocity and acceleration are:`

1.parallel to each other

2.inclined to each other at an angle of 45 degree

3.antiparallel to each other

4.perpendicular to each other

1.30 degree

2.45 degree

3.60 degree

4.90 degree

1.4

2.3

3.2

4.1

1.parabola

2.circle

3.square

4.rectangle

## Question: `If air resistance and air buoyancy are to be ignored then which of the following factors determines the time of flight of the projectile ?`

1.initial velocity

2.horizontal component of initial velocity

3.vertical component of initial velocity

4.horizontal component of acceleration.

## Question: `If air resistance is ignored then the horizontal motion of the oblique projectile takes place at`

1.uniform acceleration

2.variable acceleration

3.uniform retardation

4.uniform velocity .

## Question: `If retardation produced by air resistance to the projectile is one-tenth of acceleration due to gravity the time to return from the maximum height:`

1.increases by 9%

2.decreases by 9%

3.increases by 11%

4.decreases by 11%

## Question: `If the height attained by a projectile is the greatest then which of the following is the maximum ?`

1.Horizontal range

2.Angle of projection with the vertical

3.Force of gravity

4.Time of flight

2.nine times

3.six times

4.eight times

1.zero

2.45 degree

3.90 degree

4.180 degree

## Question: `In projectile motion the modulus of rate of change of speed:`

1.is constant

2.first increases then decreases

3.first decreases then increases

4.none of the above

1.17m

2.12m

3.34.44m

4.12.3m

1.onece only

2.twice

3.thrice

4.four time

1.4

2.5

3.6

4.3

1.h / 4

2.h / 2

3.h

4.2h

1.60 m

2.45m

3.30m

4.15m

## Question: `Two projectiles are fired at different angles with the same magnitude of velocity such that they have the same range. At what angles they might have been projected?`

1.10 degree and 50 degree

2.25 degree and 65 degree

3.35 degree and 75 degree

4.None of these

## Question: `Two stones are thrown up simultaneously from the edge of a cliff with initial speeds v and 2v. The relative position of the second stone with respect to first varies with time till both the stones strike the ground as:`

1.linearly

2.first linearly then parabolically

3.parabolically

4.first parabolically then linearly

## Question: `When the range of a projectile on an inclined plane is maximum then:`

1.the focus of the path is on the plane

2.the focus of the path is below the plane

3.the focus of the path is above the plane

4.the focus of the path lies at any place

## Question: `Which of the following is not a projectile?`

1.A bullet fired from the gun

2.A rocket fired into space

3.A ball thrown upwards

4.A stone thrown horizontally from the top of the tower

## Question: `Which of the following is the essential characteristic of a projectile?`

1.Initial velocity inclined to the horizontal

2.Zero velocity at the highest point

3.Constant acceleration perpendicular to the velocity

4.None of these

## Question: `Which of the following is the largest when the height attained by the projectile is the greatest?`

1.Range

2.Time of flight

3.Angle of projectile with the vertical

4.None of the above

1.60 m/s

2.30 m/s

3.50 m/s

4.40 m/s

## Question: `wo bullets are fired horizontally with different velocities from the same height. Which will reach the ground first?`

1.Slower one

2.Faster one

3.Both will reach simultaneously

4.It cannot be predicted

## More MCQS

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