Question

The equation of motion of a moving particle is given by
x = (5t2+7) m
find its instantaneous velocity after 2 seconds. ​

Answer 1

Answer:

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Explanation:

x = (5t2+7) m

v = x / t = 5t + 7/ t

at t= 2 s :

5 (2) + 7 / 2

= 10 + 3.5 = 13.5 m/s