Motion in A Str...

A ball dropped from a height of $10$ m, rebounds to a height of $2.5$ m. If the ball is in contact with the floor for $0.01$ second, its acceleration during contact is ($g = 9.8$ $ms^{-2}$)

A car moving with a constant acceleration covers the distance between two points $180\;m$ apart in $6\;s$. If its speed as it passes the second point is $45\;ms^{-1}$, its speed at the first point is

A sharp stone of mass $2$ kg falls from a height of $10$ m on sand and buries into the sand. It comes to rest in a time of $0.029$ second. The depth through which it buries into sand is

A bus is moving along a straight road with a uniform acceleration. It passes through two points A and B separated by a certain distance with velocity of $30$ kmph and $40$ kmph respectively.Velocity of the car exactly midway between A and B is

A body travels $200\;cm$ in the first two seconds with cosntant speed and $220\;cm$ in the next $4$ seconds with constant deceleration. The speed of the body at the end of the $7^{th}$ second is

While moving with uniform acceleration, a body has covered $550 \;m$ in $10$ second and attained a velocity of $105 \;ms^{-1}$. Its initial velocity $u$ and acceleration $a$ respectively are

The average velocity of a body moving with uniform acceleration after travelling a distance of $3.06\ m$ is $0.34\ {m/s}$. The change in velocity of the body is $0.18\ {m/s}$. During this time, its acceleration is

A body travels $200\;m$ in the first two second and $220\;m$ in the next four second. The velocity at the end of the seventh second from the start will be

A ball after having fallen from rest under the influence of gravity for $6s$, crashes through a horizontal glass plate, thereby losing two-third of its velocity. Then it reaches the ground in $2s$, height of the plate above the ground is

A ball is thrown straight upward with a speed $v$ from a point $h$ meters above the ground. The time taken for the ball to strike the ground is