Question

a motion of object is expressed by x(t) =2t²-3t+4m average speed of object for initial 3 s and instantaneous speed at t=3 s is ... .. and .......
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Answer 1

Explanation:

avg speed = dx/dt

2×2t-3

put the value of t = 3

4×3- 3 = 12-3 = 9

instantaneous speed = dx/dt

2×2t-3

put the value of t = 3

4×3- 3 = 12-3 = 9