The time it takes for the volleyball to hit the ground is equal to the time it takes for the ball to reach its maximum height.
Using the equation for the vertical motion of a projectile, we can calculate the time it takes for the ball to reach its maximum height.
t = (2*v)/g
where t is the time, v is the initial velocity, and g is the acceleration due to gravity (32 ft/s^2).
t = (2*21)/32
t = 1.3125 seconds
Therefore, Sharon has 1.31 seconds to react before the volleyball hits the ground.
Marsha serves the volleyball to Sharon with an upward velocity of 21ft/s
. The ball is 3.5 feet above the ground when she strikes it. How long does Sharon have to react, before the volleyball hits the ground? Round your answer to two decimal places.
3 answers
answered is assuming she hit it at ground level
AAAaannndd the bot gets it wrong yet again!
h = 3.5 + 21t - 16t^2
h=0 when t=1.46
h = 3.5 + 21t - 16t^2
h=0 when t=1.46