Question

uelocihy is the area acunder a-t graph
Area ( =frac{1}{2}(20+10) times 20=300 mathrm{ms}^{-1} )
Auecage ( =frac{Delta V}{Delta t}=frac{30 phi m s^{-1}}{20 s}=15 mathrm{ms}^{-2} )
acclecation

# Acceleration zott O e so 2030 time Find Querage acceleration in Liest 20 seconds.

Solution