KinematicsHard
Question
A car, starting from rest, has constant acceleration α1 for time t1 during which it covers a distance s1.
In the next interval t2, the car has a constant retardation α2 and comes to rest after covering a
distance s2 in time t2. The average speed of the car during the complete journey is :-
In the next interval t2, the car has a constant retardation α2 and comes to rest after covering a
distance s2 in time t2. The average speed of the car during the complete journey is :-
Options
A.Zero
B.
C.
D.Both options (2) and (3)
Solution
Average speed = 
∵ α1t1 = αt2 (by I equation of motion)
∴ Vavg
α1t1 or
α2t2
∵ α1t1 = αt2 (by I equation of motion)
∴ Vavg
α1t1 orα2t2Create a free account to view solution
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