An Object Moving Along a Horizontal Surface Approaches the Bottom

Multiple Choice

An object moving along a horizontal surface approaches the bottom of a ramp. At the very bottom of the ramp, point A, its speed is 40 m/s. The object goes up the ramp and reverses direction at point B. What is the height of point B above point A? The angle of inclination is 30°. Neglect friction and use g = 10 m/s².

A) 50 m
B) 60 m
C) 70 m
D) 80 m
E) 90 m