A particle is projected with a speed 10 
m/s and at angle 45 0 with the horizontal. The rate of change of speed with respect to time at t = 1 s is (g = 10 m/s 2 )
A
m/s 2
B
10 m/s 2
C
zero
D
5 m/s 2
Text Solution
Verified by ExpertsThe correct answer is:
C
At t = 1s, particle is at maximum height.
Angle between velocity vector and acceleration vector is 90º.
Hence at this position rate of change of speed with respect to time is zero.
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