Motion in A Str...

A man drops a ball downside from the roof of a tower of height 400 meters. At then same time another ball is thrown upside with a velocity 50 m/sec from the base of the tower, then they will meet at which height from the base of the tower:  

If a body loses half of its initial velocity on permenenting 2 cm in a wooden block, them how much it penetrate more before its velocity reduces to one fourth of its initial velocity [Assume retaradation of body in uniform ]

A body is thrown with speed 20 m/s vertically upwards,if will return to thrower's hand after a time $$ (g = 10 m/s^2) $$

A man runs at a speed of $$4.0 \,m/s$$ to overtake a standing bus. When he is $$6.0 \,m$$ behind the door (at $$t = 0$$), then bus moves forward and continues with a constant acceleration of $$1.2 \,m/s^2$$. The man shall access the door at time $$t$$ equal to:

A car moving along a straight highway with a speed of 108 km/h, is brought to rest within a distance of 100 m. How long does it take for the car to stop?

A bullet moving with a speed of $$100$$ $$ms^{-1}$$ can just penetrate two planks of equal thickness. Then the number of such planks penetrated by the same bullet when the speed is doubled will be:

A juggler maintains four balls in the air with air with throwing speed $$20$$ m/s upwards in regular time intervals. When one ball is about to leave  his hand the height of balls in air from the ground will be:

A particle travels $$10\ m$$ in the first $$5\ sec$$ and $$10\ m$$ in the next $$3\ sec$$. Assuming constant acceleration, what is the distance travelled in the next $$2\ sec$$?

A person crossing the a road with a certain velocity due north sees a car moving towards east. The velocity of the car with respect to the person is $$\sqrt 2$$ times that of velocity of the person. The angle made by the relative velocity with the east  is 

An aeroplane is in a level flight at $$144km/hr$$ at an altitude of $$1000m$$. How far from a given target a bomb be released from it to hit the target ?(take $$g=10m/s^2$$)