a boat traveling north at 100 m/s is accelerated due east by the wind at a rate

Question

a boat traveling north at 100 m/s is accelerated due east by the wind at a rate of 2.0 m/s2 for 12 s. What is the final speed of the plane?
B) a bullet is fired horizontally from the top of a 80 m tall building at a speed of 200 m/s. How far from the edge of the building will the bullet strike the ground? a boat traveling north at 100 m/s is accelerated due east by the wind at a rate of 2.0 m/s2 for 12 s. What is the final speed of the plane?
B) a bullet is fired horizontally from the top of a 80 m tall building at a speed of 200 m/s. How far from the edge of the building will the bullet strike the ground? a boat traveling north at 100 m/s is accelerated due east by the wind at a rate of 2.0 m/s2 for 12 s. What is the final speed of the plane?
B) a bullet is fired horizontally from the top of a 80 m tall building at a speed of 200 m/s. How far from the edge of the building will the bullet strike the ground?

Explanation / Answer

B)

given,

h=80 m

u=200 m/sec

now,

h=1/2*g*t^2

80=1/2*9.8*t^2

===>

t=sqrt(80*2/9.8)

t=4.04 sec

and

horizontal distance x=u*t

x=200*4.04

x=808 m

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