NEET Physics Motion In A Plane MCQs

The potential energy of a projectile at its maximum height is equal to its kinetic energy there. If the velocity of projection is $20\,m{s^{ - 1}}$ its time of flight is $\left( {g = 10\,\,m{s^{ - 2}}} \right)$

Rain drops are falling vertically downward at $4\,\,kmph$. For a person moving forward at $3\,\,kmph$ feels the rain falling at

Rain drops are falling vertically downward at $4\,\,kmph$. For a person moving forward at $3\,\,kmph$ feels the rain falling at

If $\overrightarrow F = 2\widehat i - 3\widehat j\,\,N$ and $\overrightarrow r = 3\widehat i + 2\widehat j\,\,m$ then torque $\overrightarrow au$ is

If $\overrightarrow F = 2\widehat i - 3\widehat j\,\,N$ and $\overrightarrow r = 3\widehat i + 2\widehat j\,\,m$ then torque $\overrightarrow au$ is

A boat of mass 50 kg is ${O^ + }$ the rest. A dog of mass 5 kg moves in the boat with a velocity of 20 m/s. What is the velocity of a boat? (nearly)

A boat of mass 50 kg is ${O^ + }$ the rest. A dog of mass 5 kg moves in the boat with a velocity of 20 m/s. What is the velocity of a boat? (nearly)

When an object is shot from the bottom of a long smooth inclined plane kept at an angle ${60^{\rm{o}}}$ with horizontal, it can travel a distance ${x_1}$ along the plane. But when the inclination is decreased to ${30^{\rm{o}}}$ and the same object is shot with the velocity, it can travel ${x_2}$ distance. Then ${x_1}:{x_2}$ will be:

The speed of a swimmer in still water is 20 m/s. The speed of river water is 10 m/s and is flowing due east. If he is standing on the south bank and wishes to cross the river along the shortest path the angle at which he should make his strokes w.r.t. north is given by:

If the magnitude of sum of two vectors is equal to the magnitude of difference of the two vectors, the angle between these vectors is: