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When serving a tennis ball, a player hits the ball when its velocity is zero (at the highest point of a vertical toss). The racquet exerts a force of 540 N on the ball for 5.00 ms, giving it a final velocity of 45.0 m/s. Using these data, find the mass of the ball

Respuesta :

Answer:60 gm

Explanation:

Given

initial velocity of ball [tex]u=0[/tex]

Force exerted by racquet [tex]F=540 N[/tex]

time period of force [tex]t=5\ ms[/tex]

final velocity of ball [tex]v=45\ m/s[/tex]

Racquet imparts an impulse to the ball which is given by

[tex]J=F\Delta t=\Delta P[/tex]

[tex]J=540\times \Delta t=m(45-0)[/tex]

[tex]m=\frac{540\times 5\times 10^{-3}}{45}[/tex]

[tex]m=60\ gm[/tex]

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