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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

Respuesta :

hamzaahmeds

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:

[tex]v_x = RT\\\\T = \frac{v_x}{R}[/tex]

where,

T = Total time of ball in air = ?

R = Horizontal distance covered = 40 m

[tex]v_x[/tex] = horizontal speed = 9 m/s

Therefore,

[tex]T = \frac{9\ m/s}{40\ m}[/tex]

T = 0.225 s