Motion Test - 3...

A boy is whirling a stone tied with a string in a horizontal circular path. If the string breaks, the stone

An electron starting from rest has a velocity that increases linearly with time,i.e. v=kt where $$k=2\ m/s^2$$. The distance covered in the first three seconds will be

The velocity of a body at any instant is 10 m/s. After 5 sec, velocity of the particle is 20 m/s. The velocity at 3 seconds before is

Two objects of masses $$m_{1}$$ and $$m_{2}$$ having the same size are dropped simultaneously from heights $$h_{1}$$ and $$h_{2}$$ respectively. Find out the ratio of time they would take in reaching the ground.

A girl walks along a straight path to drop a letter in the letterbox and
comes back to her initial position. Her displacement-time graph is shown in the figure. Find the average velocity.

Rain is falling vertically with a speed of 1.7 m/s. A girl is walking with speed of 1.0 m/s in the N - E (north-east) direction. To shield herself she holds her umbrella making an approximate angle $$\theta $$ with the vertical in a certain direction. Then

A particle is moving in a circular path of radius r. Its displacement after moving through half the circle would be :

A body is thrown vertically upwards and rises to a height of 10 m. The velocity with which the body was thrown upwards is($$g=9.8\ m/s^2$$)

A body starting from rest in travelling with an acceleration of $$6m/s^2$$. Find the distance traveled by it in $$6^{th}$$ second.