An automobile and a truck start from rest at the same instant, with the automobile initially at some distance behind the truck. The truck has a constant acceleration of 2.10 m/s 2 , and the automobile an acceleration of 3.40 m/s 2 . The automobile overtakes the truck after the truck has moved 40.0 m.
(i) How much time does it take for the automobile to overtake the truck?
Correct Answers for Comprehension Sub-Questions
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION
(i)
Sol. s t = 
a t t 2 ⇒ 40 = 
× 2.10 × t 2 ⇒ t = 6.1 s
(ii)
Sol.s a = 
a a t 2 = 
× 3.4 × (6.1) 2 ⇒ d = s a – s t
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