The displacement-time graphs of two bodies P and Q are straight lines making angles 30° and 60° respec- tively with the time axis. Calculate the ratio of the velocities of P and Q.
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0
Answer:
Correct option is
B
1:3
Ratio of velocities is ratio of the slope of displacemnet(x)=time(t) graph because velocity is dx/dt
and the slope can be calculated as tanθ where θ is angle with positive x=axis.
So required ratio is
tan60
0
tan30
0
=1/3
Option B is correct.
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