Asked by Cam
With what minimum speed must you toss a 130 g ball straight up to hit the 12 m-high roof of the gymnasium if you release the ball 1.3 m above the ground?
I already figured out the minimum speed, 14m/s I'm confused on the next part
With what speed does the ball hit the ground?
Do I use, for values of H, 10.7m or 12m or 13.3m?
I already figured out the minimum speed, 14m/s I'm confused on the next part
With what speed does the ball hit the ground?
Do I use, for values of H, 10.7m or 12m or 13.3m?
Answers
Answered by
Damon
It falls with zero initial velocity from the roof to the ground which is 12 meters high the way I read it.
v = sqrt (2 * 9.8 * 12)
v = sqrt (2 * 9.8 * 12)
Answered by
Sandrine Parent
How did you calculate the minimum speed?
Answered by
john
Kf+Uf=Ki+Ui
.5*m*v^2 + 0=.5*m*(vi)^2 + m*9.8*1.3meter
m=mass
v= velo u want to solve for
vi= your initial velo, for you 14m/s
my values where .16kg ball, 13m ceiling, 1.7 off the ground. answer one for me was 14.88, answer 2 was 15.96m/s
.5*m*v^2 + 0=.5*m*(vi)^2 + m*9.8*1.3meter
m=mass
v= velo u want to solve for
vi= your initial velo, for you 14m/s
my values where .16kg ball, 13m ceiling, 1.7 off the ground. answer one for me was 14.88, answer 2 was 15.96m/s
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