A ball rolls off the edge of a horizontal plane 4.9 m high. It strikes the floor at a point 10 m horizontally away from the edge of the plane, then the speed of the ball at the instant it left the plane is?
B)5 m/s
C)20 m/s
D)10 m/s
E)40 m/s
A ball rolls off the edge of a horizontal plane 4.9 m high. It strikes the floor at a point 10 m horizontally away from the edge of the plane, then the speed of the ball at the instant it left the plane is?
B)5 m/s
C)20 m/s
D)10 m/s
E)40 m/s
B)5 m/s
C)20 m/s
D)10 m/s
E)40 m/s