Question

You throw a football straight up. Air resistance can be neglected. When the football is 4.00 mm above where it left your hand, it is moving upward at 0.500 m/sm/s. What was the speed of the football when it left your hand

Answer 1

u=8.868 m/s

Step-by-step explanation:

The displacement of the ball is 4 meters

The final speed of the ball is 0.5 m/s

The initial speed of the ball is to be calculated. Using the equation of the rectilinear motion,

`v^(2) =u^(2) +2as`

Plugging the values in the above expression,

`\\0.5^(2) =u^(2) +2*(-9.8)*4\\\\u^(2) =78.4+0.25\\\\u^(2) =78.65\\\\u=8.868 m/s`