First slide
Average Acceleration
Question

For a body traveling with uniform acceleration its final velocity V=180 - 7x  where x is the distance traveled by the body in meters.  Then the acceleration is

Easy
Solution

V=1807x

V2=1807x

2vdvdx=7

vdvdx=3.5m/s2  

other method  

comparing with equation 

V2=U2+2aS 2a=-7 a==-3.5

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