Question

n a level football field a football is projected from ground level. It has speed 9.0 m/sm/s when it is at its maximum height. It travels a horizontal distance of 40.0 mm. Neglect air resistance. Part A How long is the ball in the air

Answer 1

Answer:

T = 0.225 s

Explanation:

The speed of a projectile at the highest point of its motion is the horizontal speed of the projectile. Considering the horizontal motion with negligible air resistance, we can use the following formula:

$v_x = RT\\\\T = \frac{v_x}{R}$

where,

T = Total time of ball in air = ?

R = Horizontal distance covered = 40 m

$v_x$ = horizontal speed = 9 m/s

Therefore,

$T = \frac{9\ m/s}{40\ m}$

T = 0.225 s