net horizontal distance
Dx = - 8.1 sin 29 + 5.5 cos 25 + 4.5 cos 60
Dx = 3.308 km
net vertical distance
Dy = 8.1 cos 29 + 5.5 sin 25 - 4.5 sin 60
Dy = 5.537 km
net displacement
D^2 = Dx^2 + Dy^2
D = 6.428 km
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5.
during acceleration
d1 = 0.5 at^2
d1 = 0.5* 1.85* 11^2 = 111.925 m
velocity before deceleration, v = at = 1.85*11 = 20.35 m/s
distance travelled in deceleration
d2 = v^2/ ( 2 a')
d2 = 20.35^2 / ( 2* 3)
d2 = 69.02 m
net displacement, d = d1 + d2 = 180.945 m
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plz post other problem seperately
Comment in case any doubt, will reply for sure.. Goodluck
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