Kinematics and Dynamics
JUPEB Physics

A stone is dropped from the top of a building $45$ m high. How long does it take to reach the ground? (Take $g = 10$ m s$^{-2}$.)

A ball is thrown vertically upwards with a velocity of $30$ m s$^{-1}$. Find the maximum height reached. (Take $g = 10$ m s$^{-2}$.)

A force of $20$ N is applied to a $3$ kg block on a rough surface where the frictional force is $5$ N. Find the acceleration of the block.

A $2$ kg trolley moving at $6$ m s$^{-1}$ collides with a stationary $4$ kg trolley and the two move off together. Find their common velocity.

A force of $50$ N acts on a stationary ball of mass $0.5$ kg for $0.2$ s. Find the velocity of the ball immediately after the impact.

A projectile is fired with a velocity of $20$ m s$^{-1}$ at an angle of $30^\circ$ to the horizontal. Find its time of flight. (Take $g = 10$ m s$^{-2}$.)

A projectile is fired with a velocity of $20$ m s$^{-1}$ at $30^\circ$ to the horizontal. Find its horizontal range. (Take $g = 10$ m s$^{-2}$.)

The velocity of a body increases uniformly from $4$ m s$^{-1}$ to $10$ m s$^{-1}$ in $3$ s. Find the displacement during this interval.

A man of mass $60$ kg stands on a weighing scale in a lift accelerating upwards at $2$ m s$^{-2}$. What reading does the scale show? (Take $g = 10$ m s$^{-2}$.)

Which of the following best describes the inertia of a body?

A car starts from rest and accelerates uniformly at $2$ m s$^{-2}$. What is its velocity after $5$ s?

A body moving at $20$ m s$^{-1}$ is brought uniformly to rest in $4$ s. Calculate the distance it covers while decelerating.