Physics-Speed & Velocity
NEET Physics Speed & Velocity MCQ Question
Type: MCQ-numerical-Hard-Class 11
If the position of an object as a function of time is given by x(t) = 0.08t³, what is the instantaneous velocity at t = 4.0 seconds?
A
84 m/s
B
5.12 m/s
C
08 m/s
D
0.96 m/s
Correct Answer
Option A
Detailed Explanation
The instantaneous velocity is the derivative of the position function with respect to time. For x(t) = 0.08t³, the derivative is v(t) = 0.24t². At t = 4.0 seconds, v = 0.24 * (4)² = 3.84 m/s.
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