physics
posted by Nick .
You throw a 134 g ball straight up to a height of 43.0 m.
(a) Assume that the displacement of your hand is 0.70 m as you throw the ball straight up. How long is the ball is in your hand?
(b) Calculate the average force exerted by your hand while you are throwing it.

(a) release velocity = sqrt(2gH) = 29.0 m/s
Time in hand = 0.70 m/(Avg. Velocity) = 0.70/(29.0/2) = 0.048 s
(b) Force * Distance = Work = Potential Energy Gain at max. height
F*0.70 = M*g*H = 0.134*9.8*43 J
Solve for F in Newtons
Respond to this Question
Similar Questions

Physics
A boy in a car moving at 10 km/h [N] wants to throw a ball to a girl standing on the righthand side of the road. He is able to throw the ball at 20 km/h. He wants the ball to go straight east, directly to her. a) Relative to the car … 
physics
You throw a 141 g ball straight up to a height of 45.0 m. Assume that the displacement of your hand is 0.70 m as you throw the ball straight up. How long is the ball is in your hand? 
Physics
A juggler has a set of balls that she can toss into the air. If it takes her 0.2 s to transfer a ball from the receiving hand to the launch hand and she is able to throw a given ball straight up with a maximum speed of 10 m/s how many … 
PHYSIcs!!!
You want to figure out how fast you can throw a ball, but don't have access to a radar gun. You measure the height from the ground to your hand as you throw and discover that when you throw a ball it leaves your hand at a height of … 
Physics
You throw a ball straight into the air from a height of 4 feet and with a speed of 5.3 m/s. The moment the ball leaves your hand you start running away at a speed of 2.37 m/s. How far are you from the ball, the moment it hits the ground? 
Physics
You throw a ball straight into the air from a height of 4 feet and with a speed of 8.22 m/s. The moment the ball leaves your hand you start running away at a speed of 3.36 m/s. How far are you from the ball, the moment it hits the … 
Physics
You throw a ball straight into the air from a height of 4 feet and with a speed of 8.22 m/s. The moment the ball leaves your hand you start running away at a speed of 3.36 m/s. How far are you from the ball, the moment it hits the … 
Physics
You throw a ball straight into the air from a height of 4 feet and with a speed of 8.22 m/s. The moment the ball leaves your hand you start running away at a speed of 3.36 m/s. How far are you from the ball, the moment it hits the … 
Physics
You throw a ball straight into the air from a height of 4 feet and with a speed of 8.22 m/s. The moment the ball leaves your hand you start running away at a speed of 3.36 m/s. How far are you from the ball, the moment it hits the … 
Physics
If you throw a ball straight up at 10 m/s and release it 2m above the ground: a) What height will the ball reach V^2=u^2+2as 0=100+19.6s s=5.1+2 s=7.1m b)How long after you release the ball will it hit the ground?