Questions
Acceleration of a particle decreases exponentially from to . Write a - t equation.
a
a=6+2e-kt
b
a=3+4e-kt
c
a=6+4e-kt
d
None of these
detailed solution
Correct option is C
a-t graph is as shown in figure.Above 6 m/s2 the value 4 m/s2 decreases exponentially. Hence, a - t equation isa=6+4e-ktHere, k is a positive constantAt t = 0,a=6+4e0=10 m/s2 as e0=1 At t=∞ a=6+4e-∞=6 m/s2 as e-∞=0Talk to our academic expert!
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