Question

A locomotive of mass m starts moving so that its velocity varies according to the law v = a$\sqrt{s}$, where a is a constant, and s is the distance covered. Find the total work performed by all the forces which are acting on the locomotive during the first t seconds after the beginning of motion.

• A. ma³t²/4
• B. ma⁴t²/4
• C. ma⁴t²/8
• D. ma³t²/8

Answer 1

The correct option is A. $m{a}^4{t}^2/8$.