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14If you were to add these forces they would = 0 +

15Add together to equal greater force.http://www.youtube.com/watch?v=LEs9J2IQIZY p()= m() x v()p = mv (kg x m/s)1715 kg m/s 30 m/s ? A. 45 kg

B. 15 kg

C. 2.0 kg

D. 0.5 kg

18 F = m x a

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F = m x a

t=u=t=v=1 s10 m/st=v=2 s20 m/st=v=3 s30 m/s0 s0 m/st= u= , a= (u-v)/t = (30-0)/3 =10 m/s

= 9.8 m/s/s 9.8 m/s

23http://www.youtube.com/watch?v=UVdqxYyFRKY

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