- #1

SS2006

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Question:

A projectile is fired at 50 m/s and 60 degrees along a level surface.

a) Find the velocity and displacement VECTORS at t = 1.0 s

i used v2 = v1 + at

v2 = 43.3 + (-9.8) (1)

v2 = 33.5 m/s

thats the velocity at 1 second

now displacement i used

d = v1t + 1/2 at squared

i got y = 43.3 (1) + 1/2 -10 (1) squared

to get

displacement = 38.4 meters

ofcourse the y velocity i got it from : 50 sin 60 = 43.3 m/s and x velocity 50cos60 = 25 m/s as you know

but teh teacer said those aer right numbers but he ased for VECTORS so he wants 33.5 and an angle beside it i assume, i am lost now, i need help finding the displacement and velocity VECTORS :D

thanks guys!

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i posted this in the other forum too , didnt know which ones more right lol thanks, but need it soon