A ball is thrown horizontally from a cliff edge with velocity $v$. Another ball is dropped vertically from the same point at the same time. Which ball has the greater acceleration at any given instant before hitting the ground (neglecting air resistance)?

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 $\left[ {m/{s^2}} \right]$

A car travels half the distance with constant velocity of 40 kmph and the remaining half with a constant velocity of 60 kmph. The average velocity of the car in kmph is

A particle moves with constant acceleration and ${v_1},{v_2}$ and ${v_3}$ denote the average velocities in the three successive interval ${t_1},{t_2}$ and ${t_3}$ of time. Which of the following relations is correct?

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

If the velocity of a particle is $\left( {10 + 2{t^2}} \right)m/s$, then the average acceleration of the particle between 2s and 5s is

If the velocity $\left( {in\,\,m{s^{ - 1}}} \right)$ of a particle is given by $4\widehat i + 5t\widehat j$, then the magnitude of its acceleration $\left( {in\,\,m{s^{ - 2}}} \right)$ is

The displacement of two objects, $M$ and $N$, moving along a straight line are given by $x_M(t) = 2t + 4t^2$ and $x_N(t) = 8t - 2t^2$ respectively. At what time do they have the same velocity?

A stone is thrown vertically upwards with an initial velocity $u$. After reaching a height $h$, its velocity becomes $\frac{u}{2}$. What is the maximum height reached by the stone?

Stopping distance of a moving vehicle is directly proportional to

An object moves with a constant velocity of 10 m/s. What is its acceleration?