Question

A hot air balloon is moving at a speed of 10 meters/second in the +x direction. The balloonist throws a brass ball with a velocity of -2 meters/second with respect to himself. If the ball lands after 20 seconds, about how far does it land horizontally from the point at which it was released?

A). 120 m B). 125 m C). 300 m D). 400 m

Answer 1

I think you meant to write 420 m for D. That is the answer.

Answer 2

Answer:240 m

Explanation:

Given Balloon is going towards positive x direction with a speed of 10 m/s

and balloonist throw the ball with -2 m/s with respect to himself

thus absolute ball velocity is 12 m/s

As there is no horizontal force in x direction thus distance covered by ball in 20 sec is

R=
`12* 20`=240 m