### NEET Physics - New - Kinematics

#### Question - 1

If the body is moving in a circle of radius r with a constant speed v, its angular velocity is:

• A $\frac{v^ 2}{r}$
• B vr
• C $\frac{v}{r}$
• D $\frac{r}{v}$

#### Question - 2

If a particle moves in a circle describing equal angles in equal times, its velocity vector:

• A Remains constant
• B Changes in magnitude
• C Changes in direction
• D Changes both in magnitude and direction

#### Question - 3

If the velocity of a particle is υ = At + Bt2, where A and B are constants, then the distance travelled by it between 1 s and 2 s :

• A $\frac{A}{2}$ + $\frac{B}{3}$
• B $\frac{3}{2}$A + 4B
• C 3A + 7B
• D $=\frac {3}{2}A + \frac {7}{3}B$

#### Question - 4

A particle of unit mass undergoes one dimensional motion such that its velocity varies according to υ(x) = βx-2n, where β and n are constants and x is the position of the particle. The acceleration of the particle as a function of x is given by:

• A -2β2x2n+1
• B -2nβ2e-4n+1
• C -2nβ2x2n-1
• D -2nβ2x-4n-1

#### Question - 5

A stone falls freely under gravity. It covers distances  h1, h2 and h3 in the first 5 seconds, the next 5 seconds and the next 5 seconds respectively. The relation between h1, h2 and h3 is :

• A h1 = 2h2  =  3h3
• B h1 =  $\frac{h_{2}}{3} = \frac{h_{3}}{5}$
• C h2 = 3h1  and  h3 =  3h2
• D h1 = h2  =  h3

#### Question - 6

A particle covers half of its total distance with speed υ1  and the rest half distance with speed υIts average speed during the complete journey is :

• A $\frac{υ_{1}υ_{2}}{υ_{1}+υ_{2}}$
• B $\frac{2υ_{1}υ_{2}}{υ_{1}+υ_{2}}$
• C $\frac{2υ_{1}υ^{2}_{2}}{υ^{2}_{1}+υ^{2}_{2}}$
• D $\frac{υ_{1}+υ_{2}}{2}$

#### Question - 7

A boy standing at the top of a tower of 20m height drops a stone. Assume g = 10 m / s, the velocity with which it hits the ground is :

• A 10.0 m/s
• B 20.0 m/s
• C 40.0 m/s
• D 5.0 m/s

#### Question - 8

A man of 50 kg mass is standing in a gravity free space at height of 10m above the floor. He throws a stone of 0.5 kg mass downwards with speed of 2 m/s. When the stone reaches the floor the distance of the man above the floor will be :

• A 9.9 m
• B 10.1 m
• C 10.0 m
• D 20 m

#### Question - 9

A bus is moving with a speed of 10 m/s on a straight road. A scooterist wishes to overtake the bus in 100s. If the bus is at a distance of 1 km from the scooterist, with what speed should the scooterist chase the bus?

• A 40 m/s
• B 25 m/s
• C 10 m/s
• D 20 m/s

#### Question - 10

A particle starts its motion from rest under the action of a constant force. If the distance covered in first 10 seconds is S1 and that covered in the first 20 seconds is S2, then __________

• A S2 = 3S1
• B S2 = 4S1
• C S2 = S1
• D S2 = 2S1