As shown in the figure a body of mass m moving vertically with speed 3 m/s hits a smooth fixed inclined plane and rebounds with a velocity `v_(f)` in the horizontal direction . If angle of plane with horizontal is `30^(@)` , the velocity `v_(f)` will be

As shown in the figure a body of mass m moving horizontally with speed sqrt(3) m//s hits a fixed smooth wedge and goes up with a velocity v_(f) in the vertical direction. If /_ of wedge is 30^(@) , the velocity v_(f) will be :

As shown in the figure a body of mass m moving horizontally with speed sqrt(3) m//s hits a fixed smooth wedge and goes up with a velocity 1v_(t) in the vertical direction. If /_ of wedge is 30^(@) , the velocity v_(f) will be :

A man moving with a speed v down the inclined plane meets the rain horizontally with same speed. The actual velocity of rain is?

A horizontal force F is applied to a block of mass m on a smooth fixed inclined plane of inclination theta to the horizontal as shown in the figure. Resultant force on the block up the plane is:

In the figure shown a particle P strikes the inclined smooth plane horizontally and rebounds vertically if the angle theta is 60^(@) then the coefficient of restitution is:

A particle of mass m is thrown horizontally from point P , as shown in the figure, with speed 5 m//s . It strikes an inclined plane perpendicularly as shown. The inclination of the plane is 30^(@) with the horizontal. Then, the height h shown in the figure is ( Take g = 10 m//s^(2) ) .