Question

A ball is thrown vertically upwards and it returns to the throqer in 6 seconds. find the velocity with which it was tbrown

Answer 1

The velocity changes from [ V upward ] to [ V downward ]. 

The total change in velocity is [ 2V ]. 

Acceleration = (change in velocity) divided by (time for the change) = 2V/6 

But the acceleration is just the acceleration of gravity = 9.8 meters / sec2 . 

9.8 = 2V / 6 

2V = 58.8 

V = 29.4 meters per second upward

Answer 2

Hey mate ^_^

The velocity changes from V upward-V downward

The total change in velocity is 2V

Acceleration = 2V/6 

But the acceleration is just the acceleration of gravity = 9.8 meters / sec^2 

9.8 = 2V / 6 

2V = 58.8 

V = 29.4 m/s upward

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