The position of an object moving along x - axis is given by a + bt² where a = 8.5m b = 2.5 m/s² and t is measured in seconds.
what is it's velocity at t = 0 and t = 2.0 s.
what is the average velocity between t = 2.0 s and t = 4.0 s?
{{Explanation is also needed}}Explanation is also needed
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x = a + bt^2
v = 2bt
Velocity at t = 0 is 0
Velocity at t = 2s is = 2*2.5*2 = 10 m/s
At t = 2s
x = 8.5 + 2.5*2^2
x = 18.5m
At t = 4s
x = 8.5 + 2.5*4^2
x = 48.5m
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