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The position of an object moving along x...

The position of an object moving along x-axis is given by `x=a+bt^(2)` where `a = 8.5 m, b = 2.5 m s^(-2)` and t is measured in seconds. What is its velocity at t = 0 s and t = 2.0 s. What is the average velocity between t = 2.0 s and t = 4.0 s ?

A

Velocity at t=2 see is zero

B

average velocity between t=2, t=4 sec is 15 m/s.

C

velocity at t =4 sec is 10 m/s

D

all the above are true

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • The velocity and time graph for a particle moving in a straight line s shown in the figure. Then, the average velocity between t=4 s and t=6 s is _____

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    C
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