Question

A con on at ground level launches a cannonball horizontally. If the cannon fires with a...

A con on at ground level launches a cannonball horizontally. If the cannon fires with a velocity of 28.3m/s and at an angle of 30 degrees how far will the cannonball travel?

Homework Answers

Answer #1

vo = initial velocity = 28.3 m/s

= angle of launch = 30

consider the motion along the vertical direction or Y-direction

Voy = initial velocity In Y-direction = vo Sin = (28.3) Sin30

a = acceleration = - 9.8

Y = displacement = 0 m

t = time of travel

using the equation

Y = Voy t + (0.5) at2

0 = ((28.3) Sin30) t + (0.5) (- 9.8) t2

t = 2.88 sec

consider the motion along the horizontal direction or X-direction

Vox = initial velocity In X-direction = vo Cos = (28.3) Cos30

a = acceleration = 0

X = displacement = ?

t = time of travel = 2.88

using the equation

X = Vox t + (0.5) at2

X = ((28.3) Cos30) (2.88)+ (0.5) (0)(2.88)2

X = 70.6 m

t = 2.88 sec

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