KinematicsMedium
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
View Solution FreeMore Kinematics Questions
The equation of a wave is given by Y = A sin where ω is the angular velocity and u is the linear velocity. The dime...If acceleration of M is a then acceleration of m is...A particle moves in x-y plane according to rule x = a sin ωt and y = a cos ωt. The particle follows...A particle of mass m moves on the axis as follows : it starts from rest at t = 0 from the point x = 0, and comes to rest...If 4 seconds be the time in which a projectile reaches a point P of its path and 5 seconds the time from P till it reach...