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A dump truck filled with pumpkins is travelling at 20 m/s when a pumpkin falls off the back and onto

the road, 5 m below. When the pumpkin hits the road, it will be

A) 5 m behind the truck.

B) 20 m behind the truck.

C) 40 m behind the truck.

D) less than 1 m behind the truck.

I used the equation d=(1/2)at^2 to find the time that it took the pumpkin to fall 5m. Then, I assumed that the horizontal velocity of the pumpkin is 20 m/s, so after finding time, I used V=d/t, 20=d/1. I found that the pumpkin should be 20m behind the truck, but the solution to this question is D.

Can anyone tell me why?

Thanks a bunch.