Home » Past Questions » Physics » The distance xm travelled by a particle in time t seconds is described by the eq...

The distance xm travelled by a particle in time t seconds is described by the eq...


Question

The distance xm travelled by a particle in time t seconds is described by the equation x = 10 + 12t2, Find the average speed of the particle between the time interval t = 2s and t = 5s

Options

A) 60 ms-1

B) 72 ms-1

C) 84 ms-1

D) 108 ms-1


The correct answer is B.

Explanation:

speed = \(\frac{dx}{dt}\)

\(\frac{dx}{dt}\) = 10 + 12t2

\(\frac{dx}{dt}\) = 24t

\(\frac{dx}{dt}\) =24 x 3

\(\frac{dx}{dt}\) = 72 ms-1


More Past Questions:


Dicussion (1)