Question

A rookie quarter back throws a football with an initial upward velocity component of 12.0 m/s and a horizontal velocity component of 20.0 m/s. Ignore resistance. How much time is required for the football to reach the highest point of the trajectory

Answer 1

Answer:

t = 1.22 s

Explanation:

Given that,

The initial upward velocity component of a football = 12 m/s

The horizontal velocity component is 20 m/s

We need to find the time required for the football to reach the highest point of the trajectory. Let the time is t.

Using first equation of motion to solve it such that,

$v=u+at$

u is initial velocity

v is final velocity

a = -g

so,

$t=\dfrac{u}{g}\\\\t=\dfrac{12}{9.8}\\\\t=1.22\ s$

So, the required time taken by the football to reach the highest point is 1.22 seconds.