posted by Anonymous .
An object is shot from the back of a truck moving at 40 km/h on a straight horizontal road. The launcher is aimed upward, perpendicular to the bed of the truck. If air resistance is neglected, the object will fall:
a. depends on the value of g
b. in front of the truck
c. depends on the initial speed of the object
d. on the truck
e. behind the truck
What do you think? Hint: The object leaves the truck bed with the same horizontal velocity component as the truck.
OR: Consider what happens as seen from the inertial coordinate system of the truck. The object goes straight up and comes straight down.