Two balls are projected horizontally from the same height with different initial speeds. Neglecting air resistance, which statement is true about their times of flight?

A car starts from rest and moves with uniform acceleration a on a straight road from time t=0 to t=T. After that, a constant deceleration brings it to rest. In this process the average speed of the car is

The relation between time t and distance x is $t = a{x^2} + bx,$ where a and b are constants. The acceleration is

A body movies with an initial velocity $10\,\,m{s^{ - 1}}$. . If it covers a distance of 20 m in 2S, then acceleration of the body is

A particle moves along a straight line such that its position x at any time t is $x = 6{t^2} - {t^3}.$. Where x in metre and t is in second, then

A particle starts from rest and traverses a distance 2x with uniform acceleration, then moves uniformly over a further distance 4x and finally comes to rest after moving a further distance 6x under uniform retardation. Assuming entire motion to be rectilinear motion, the ratio of average speed over the journey to the maximum speed on its way is

The $x{\rm{ \;and \;}}y$ coordinates of the particle at any time are $x = 5t - 2{t^2}{\rm{ \;and\; }}y = 10t$ respectively, where $x{\rm{ \;and\; }}y$ are in meters and $t$ in seconds. The acceleration of the particle at $t = 2s$ is

A Car moving with a speed V=12 m/s applies its brakes so that it stops within a time interval of $\Delta t = 3.6S$ . Then the average acceleration of the car is $\left[ {m/{s^2}} \right]$

The position of a particle is given by $x = 3t - 4t^2$ and $y = 6t$ (where $x$ and $y$ are in meters and $t$ is in seconds). What is the acceleration of the particle at $t = 1$ s?

When two particles A and B are at point O,A is moving with constant velocity of 50 m/s while B is not moving. But B possesses a constant acceleration of $10\,\,m/{s^{ - 2}}$. After how much time they will be at a distance of 125 m moving along same straight line, from each other?

A bullet emerges from a barrel of length 1.2 m with a speed of $640\,\,m{s^{ - 1}}$. Assuming constant acceleration the approximate time that its spends in the barrel after the gun is fired is