A hunter aims directly at a target (on the same level) 36.0 m away.
a, If the arrow leaves the bow at a speed of 22.8 m/s , by how much will it miss the target?
b, At what angle should the bow be aimed so the target will be hit?
Using x = vt
where x is horizontal distance, v is velocity and t is time
t = x / v
t = 36 / 22.8
t = 1.578 sec
this is time in air.
How much the object has moved vertically in this time
y = 1/2gt2
y = 1/2 * 9.8 * 1.5782
y = 12.2 m ( below target)
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(b) Here, we can use range equation for projectile motion
R = v2 sin 2 / g
sin 2 = Rg /
v2
sin 2 = 0.6786
2 = 42.739
= 21.36
degree
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