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Anna throws a ball horizontally off her apartment balcony at a speed of 6.0 meters/second. If the ball falls 10 meters from the balcony to the base of the apartment, calculate how long it takes the ball to reach the base

Respuesta :

AL2006
The horizontal speed is totally irrelevant.  The ball would take the same amount of time to hit the ground if it's tossed horizontally, rolled gently off the balcony, or shot horizontally from a cannon.

The distance it falls vertically is

                      D  =  (1/2) (gravity) (time)² .

                     10m  =  (1/2) (9.8 m/s²) (time²)

                   10m / 4.9 m/s²  =  time²

                     (10/4.9) s²  =  time²

                         time  =  √ (10/4.9  s²)

                                 =      1.43 seconds
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Answer:

The answer is 1.7 seconds

Explanation:

This question is simple

a ball is falling at 6m/s

It falls a height of 10m

after one second it will be at 6m out of 10m

leaving 4 left

4/6=0.7 rounded

add 1 to 0.7 to get the seconds

on Plato it will be 1.7