- #1
AncientOne99
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Homework Statement
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Ball with a mass of 0.1 kg travels at a speed of 10 m /s to the boy.
Boy kicks the ball with foot so that it bounces back at an angle of 30 degrees with respect to the horizontal floor. The ball falls back to the ground 20 meters from the boy.
With what average force and under what angle with respect to the horizontal floor did boy kick the ball if the collision took 0.1 second?
Known data:
m = 0.1 kg
v0 = 10 m/s
β = 30°
Range = 20 m
Δt = 0.1 s
F = ?
α = ?
Homework Equations
p = m*v
FΔt = mΔv = Δp
Range = (v1^2*sin(2α))/g
The Attempt at a Solution
p0= m*v0
F =mΔv/Δt
Δv = v1(-x) - v0(x) ⇒ v1 + v0
v1=√(Range*g/(sin(2α))
tanβ = (v1y)/(v1x) ?
v1= √((v1x^2)+(v1y^2))
I cannot do anything with angle of refraction because i don't know velocity1(x) and velocity1(y) pls help, thank you.