A 1000 kg automobile is at rest at a traffic signal. At the instant the light turns green, the auto mobile starts to move with a constant acceleration of 3.0 m//s^2. At the same instant a 2000 kg truck, traveling at a constant speed of 8.0 m/s, overtakes and passes the automobile. (a) How far is the com of the automobile-truck system from the traffic light at t = 5.0 s? (b) What is the speed of the com then?

A 1000 kg automobile is at rest at a traffic signal. At the instant th

1.	A 1000 kg automobile is at rest at a traffic signal. At the instant the light turns green, the auto mobile starts to move with a constant acceleration of 3.0 m//s^2. At the same instant a 2000 kg truck, traveling at a constant speed of 8.0 m/s, overtakes and passes the automobile. (a) How far is the com of the automobile-truck system from the traffic light at t = 5.0 s? (b) What is the speed of the com then?
Answer» ANSWER :(a)39 m ; (B) 10 m/s

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