A particle is moving along the positive x -axis as x = a t - 3 + b t - 3 2 + 4 t - 3 , which of the following is true?

The acceleration of the particle is 2 b

The initial velocity of the particle is a - 2 b + 4

The particle is at origin at t = 4

The acceleration of particle is 6 b

A bomb is dropped by a fighter plane flying horizontally. To an observer sitting in the plane, the trajectory of the bomb is a :

straight line vertically down the plane

parabola in a direction opposite to the motion of plane

parabola in the direction of motion of plane

E M B I B E

Physics Crash Course NEET>Chapter 2 - Kinematics>Level 3>Q 6

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IMPORTANT

Earn 100

A ball is dropped from a height $H$ from rest. The ball travels $\frac{H}{2}$ in last $1.0 s$ . The total time taken by the ball to hit the ground is

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Important Questions on Kinematics

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IMPORTANT

Physics Crash Course NEET>Chapter 2 - Kinematics>Level 3>Q 7

A stone is projected with velocity

2 \sqrt{g h}

, so that it just clears two walls of equal height

h

, at distance of

2 h

from each other. The time interval of passing between the two walls is

EASY

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Physics Crash Course NEET>Chapter 2 - Kinematics>Level 3>Q 8

At what angle

θ

to the horizontal should an object is projected so that the maximum height reached is equal to the horizontal range?

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Physics Crash Course NEET>Chapter 2 - Kinematics>Level 3>Q 9

Two bullets are fired simultaneously, horizontally and with different speeds from the same place. Which bullet will hit the ground first?

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Physics Crash Course NEET>Chapter 2 - Kinematics>Level 3>Q 10

M.S. Dhoni hits two cricket balls in the air in a

T - 20

match. Both the balls leave his bat at the same velocity but at different angles of

30 °

and

60 °

respectively. If one ignores air friction and wind velocity, which of the following statements is correct? (Angles are with respect to the horizontal)

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Physics Crash Course NEET>Chapter 2 - Kinematics>Level 3>Q 11

A ball is thrown horizontally from a height of

100 m

with an initial speed of

15 m / s

. How far does it travel horizontally in the first

2

seconds?

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Physics Crash Course NEET>Chapter 2 - Kinematics>Level 3>Q 12

The stream of a river is flowing with a speed of

2 k m h^{- 1}

. A swimmer can swim at a speed of

4 km h^{- 1}

. The direction of the swimmer with respect to the flow of the river, to cross the river straight, is

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Physics Crash Course NEET>Chapter 2 - Kinematics>Level 3>Q 13

A bullet loses

{(\frac{1}{n})}^{th}

of its velocity passing through one plank. Considering uniform retardation, the number of such planks that are required to stop the bullet can be:

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Physics Crash Course NEET>Chapter 2 - Kinematics>Level 3>Q 14

A particle starts from origin $O$ from rest and moves with a uniform acceleration along the positive $x - a x i s$ . Identify all figures that correctly represent the motion qualitatively.
( $a =$ acceleration, $v =$ velocity, $x =$ dispalcement, $t =$ time)
$(A)$ Question Image
$(B)$
$(C)$
$(D)$