Answer to Question #59414 in Mechanics | Relativity for muhammad umar

Question

A cart is moving horizontally along a straight with constant speed of 30 m/s.A projectile fired from the moving cart in such a way that it will return to the cart after the cart has moved 80 m.At what speed(relative to the cart)and at what angle (to the horizontal) must the projectile be fired?

a)35.8 m/s at 24 degrees

b)38.6 m/s at 54 degrees

c)27.2 m/s at 35 degrees

d)24.3 m/s at 44 degrees