NEET 2016 Question Paper - Phase-II Code XX Mock Test

Two cars $P$ and $Q$ start from a point at the same time in a straight line and their positions are represented by $x_P(t)=at+b{t}^2$ and $x_Q(t)=ft-t^2$. At what time do the cars have the same velocity?

In the given figure, $a=15{\text{m/s}}^2$ represents the total acceleration of a particle moving in the clockwise direction in a circle of radius $R=2.5\text{m}$ at a given instant of time. The speed of the particle is:

A rigid ball of mass $m$ strikes a rigid wall at $60^{\circ }$ and gets reflected without loss of speed. The value of impulse imparted by the wall in the ball will be:

A bullet of mass $10\text{g}$ moving horizontally with a velocity of $400{\text{ms}}^{-1}$ strikes a wooden block of mass $2\text{kg}$ which is suspended by a light inextensible string of length $5\text{m}$. As a result the centre of gravity of the block is found to rise a vertical distance of $10\text{cm}$. The speed of the bullet after it emerges out horizontally from the block will be:

Two identical balls $A$ and $B$ having velocities of $0.5\text{m/s}$ and $-0.3\text{m/s}$ respectively collide elastically in one dimension. The velocities of $B$ and $A$ after the collision respectively will be: