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according to the graph
initial velocity of A = 30km/h
final velocity of A = 0 km/h
initial velocity of B = 0 km/ h
final velocity of B=. 20km/h
Explanation:
Distance travelled by object A
a=v/t = -3 m/s
--3
v² = u² + 2as
s= 900/6 =150 km
distance travelled by object B
a= v/t = 20/15 =1.6
s= 400/3.2= 125 km/h
time at which velocity are same at 7 hrs
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