A car is moving horizontally along a straight line with a unifrom velocity of `25 m s^-1`. A projectile is to be fired from this car in such a way that it will return to it after it has moved `100 m`. The speed of the projection must be.

A cart is moving horizontally along a straight line with constant speed 30 m/s. A projectile is to be fired from the moving cart in such a way that it will return to the cart after the cart has moved 120m. At what speed (relative to the cart, in m/s) must the projectile be fired ? (Take g=10m//s^2 )

A cart is moving horizontally along a straight line with constant speed 30 m/s. A projectile is to be fired from the moving cart in such a way that it will return to the cart after the cart has moved 120m. At what speed (relative to the cart, in m/s) must the projectile be fired ? (Take g=10m//s^2 )

A cart is moving horizontally along a straight line with constant speed 30 ms^-1. A particle is to be fired vertically upwards from the moving cart in such a way that it returns to the cart at the same point from where it was projected after the cart has moved 80 m. At what speed (relative to the cart) must the projectile be fired? (Take g = 10 ms^-2 )

A cart is moving horizontally along a straight line with constant speed 30 ms^-1. A particle is to be fired vertically upwards from the moving cart in such a way that it returns to the cart at the same point from where it was projected after the cart has moved 80 m. At what speed (relative to the cart) must the projectile be fired? (Take g = 10 ms^-2 )

A cart is moving horizontally along a straight line with constant speed 30 ms^-1. A particle is to be fired vertically upwards from the moving cart in such a way that it returns to the cart at the same point from where it was projected after the cart has moved 80 m. At what speed (relative to the cart) must the projectile be fired? (Take g = 10 ms^-2 )

A boy is standing on a truck moving with a constant velocity of 15 m//s on the horizontal road. The boy throws a ball in such a way that it returns to the truck after the truck has moved 60 m . Find the speed and the angle of projection (a) as seen by the truck and (b) as seen from the road.

A person is standing on an open car moving with a constant velocity of 30 m//s on a striaght upward direction and it returns to person after the car has moved 240 m . The speed and the angle of projection