Mathematics

Problem

The distance travelled by a particle is related to time

t

x = 4t^2

. The velocity of the particle at

t = 5s

is. (1)

40 \text{ ms}^{-1}

(2)

25 \text{ ms}^{-1}

(3)

20 \text{ ms}^{-1}

(4)

8 \text{ ms}^{-1}