Motion in A Str...

If a car at rest accelerates uniformly to a speed of 144 km/h in 20s , it covers a distance of 

 A ball is thrown upwards from the ground with an initial velocity u. The ball is at a height of $$80$$m at two times. The time interval being $$6s$$. Take $$g=10m/s^2$$, the value of u is 

A laser gun of power $$3 \,mW$$ and mass $$50 \,gm$$ emits photons of wavelength $$500 \,nm$$. It is gravity frequency space and emits for one hour. Find the distance covered by gun due to recoil in this one hour (approx).

A block of mass $$5Kg$$ is kept on the floor of an elevator kept at rest. The elevator started going down with an acceleration of $$14{ ms }^{ -2 }$$ at time $$t=0$$. The magnitude of displacement of the block during $$t=0$$ to $$t=0.1s$$ is $$\left[ g=10{ ms }^{ -2 } \right]$$

A train is moving along a straight path with uniform acceleration its engine passes across a pole with a velocity of $$60km/h$$ and the end (guard'svan) passes across same pole with a velocity of $$80km/h$$. The middle point of the train will pass across same pole with a velocity

Find the odd one out and give the reason : speed, distance , mass, velocity

A body travelling with uniform acceleration crosses two points $$A$$ and $$B$$ with velocities $$20\ m/sec$$ and $$30\ m/sec$$ respectively then the speed of the body at mid point of $$A$$ and $$B$$ is

A ball dropped from some height coves half of its total during the last second of its free fall. Find

A particle falling from rest under gravity covers a distance $$x$$ in $$4\ s$$. If it continues falling then next $$2\ x$$ distance will be covered in approximately

A body released from the top of alls through a height of $$5 \mathrm { m }$$ during the first second of its fall and $$35 \mathrm { m }$$ during the last second of its fall. The height of the tower is