Ex: At t=0, speed of a car is 20 m/s. Find speed and Ex: An object accelerates at a=10 m/'s starting from displacement of the car at t= 3s, if rest. Find its displacement during the third second. a) it accelerates at a=2m/s-. VO O_ - AX2 b) it decelerates at a=2 m/s-. n - Ax=? - 1 0 t=1s 1 2s 1 3s AX3 Ex: A supertrain speeds up from v=10 m/'s to v=20 m/'s An object at rest accelerates by 4m/s for 2 s as it moves 50m. then starts to decelrate by 4mis for 2s. Draw Ex: Draw a-t graph. a) Find acceleration v-t, x-t, and a-t graphs? v (m's) b) Find the time 12 t (s) Page 12 Page 13