Motion in A Str...

(a) How long will a stone take to fall to the ground from the top of a building $$80  m$$ high and (b) what will be the velocity of the stone on reaching the ground? (Take $$g=10  m  {s}^{-2}$$)

A stone is just released from the window of a moving train moving along a horizontal straight track .When observed by a person on the ground,the stone will hit the ground following a

A ball is thrown vertically upwards. It returns $$6  s$$ later. Calculate:$$(i)$$ the greatest height reached by the ball, and $$(ii)$$ the initial velocity of the ball. (Take $$g=10  m  {s}^{-2}$$)

A ball is thrown from rear end of the compartment of train to the front end which is moving at a constant horizontal velocity. An observer $$A$$ sitting in compartment and another observer $$B$$ standing on the ground draw the trajectory. They will have

A rocket is fired upward from the earth's surface such that it creates an acceleration of $$19.6  { m }{ { s }^{- 2 } }$$. If after $$5  s$$, its engine is switched off, the maximum height of the rocket from earth's surface would be

From a $$200  m$$ high tower, one ball is thrown upwards with speed of $$10  { m }/{ s }$$ and another is thrown vertically downwards at the same speed simultaneously. The time difference of their reaching the ground will be nearest to

A car starting from rest accelerates uniformly to acquire a speed $$20\ kmh^{-1}$$ in 30 min. The distance travelled by car in this time interval will be

A body moves from rest with uniform acceleration and travels 270 m in 3 s. Find the velocity of the body at 10 s after the start.

A particle starts to move in a straight line from a point with velocity $$10 m s^{-1}$$ and acceleration $$-2.0 m s^{-2}$$. Find position(S) and velocity(v) of the particle at $$t = 5$$ s

A ball is thrown vertically upwards from the top of a tower with an initial velocity of $$19.6  m  {s}^{-1}$$. The ball reaches the ground after $$5  s$$. Calculate :$$(i)$$ the height of the tower, $$(ii)$$ the velocity of ball on reaching the ground. Take $$g=9.8  m  {s}^{-2}$$.