- #1
Bryon
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Homework Statement
An astronaut in his space suit can throw a ball a maximum distance dmax = 9 m on the surface of the earth.
For a given speed of the ball, what angle to the horizontal q (in degrees) will yield the greatest range? 45 degrees
If the ball is thrown at this same angle q, what speed will produce this greatest range (9 m) ? 9.3m/s
How far can he throw the ball on a planet where g1 = 22 m/s2? 4.009
What height will the ball reach on this "maximum range" trajectory? (on the planet where g1 = 22 m/s2)? I am having a problem with this one. I need help!
Homework Equations
v(y) = v(initial)*sin(angle)
v(y) = v( y initial) + at
y = y(initial) + 0.5(v(inital) + v)t
The Attempt at a Solution
v(y) = 9sin(45) = 6.57
0 = 6.57 + 22(t)
t = 0.298
y = 0 + 0.5(6.57 + 0)*(0.298)
y = 0.978
Where did I go wrong? Did I need the vertial acceleration?
thanks!