Find velocity!

Classical Mechanics Level 3

If the equation of distance traveled by a person is

S=5t²-4t+1

Find the speed at t=3s

11 unit 26 unit It is an impossible equation for distance traveled. 25 unit

A Former Brilliant Member by A Former Brilliant Member

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1 solution

Aryan Sanghi
Jun 27, 2020

v = d s d t v = \frac{ds}{dt}

v = 10 t − 4 v = 10t - 4

At t = 0 t = 0 , v = − 4 m / s v = -4 m/s , which is impossible as speed can't be negative

So, answer is Impossible scenario

1 Helpful 1 Interesting 1 Brilliant 0 Confused

Nice one .....its good

A Former Brilliant Member - 11 months, 2 weeks ago

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