Question

A car covers a distance of ${60}^k$ meters in a minute. Calculate the speed of the car in m/sec.

• A. 60^k
• B. 60^k-1
• C. 60^k+1
• D. None of these

Answer 1

The correct option is B

60^k-1

$Speed=\frac{Distancetravelled}{Time}$

1 minute = 60 seconds

Speed of the car = $\frac{{60}^k}{60}$

We know that $\frac{a^m}{a^n}=a^{m-n}$ (a is a non-zero integer)

$\therefore$ Speed = ${60}^{k-1}$ m/sec