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kelvin56484984
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Homework Statement
A motorcycle daredevil wants to ride up a 50.0m ramp set at a 30.0 θ incline to the ground. It will launch him in the air and he wants to come down so he just misses the last of a number of 1.00 m diameter barrels. If the speed at the instant when he leaves the ramp is 60.0 m/s, how many barrels can be used?
the answer is 355
Homework Equations
Vf=Vi*cosθ
x=xo+vi*cos θ*t
Vf=Vi*sin θ -gt
y=y0+vi*sin θ*t-1/2gt^2
height=Vi^2*sin θ*cos θ/2g
Range=Vi^2*sin2 θ/g
The Attempt at a Solution
Vf=Vi*cos30
Vi=60 / cos30
Vi=69.3 m/s
R=Vi^2*sin2 θ/g
R=69.3^2*sin60/9.8
R=424
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