Question

Shyam is riding his bike at $54$ kmph. He takes to cover a distance of 15 m.

• A. 1 s
• B. 1 hr
• C. 1.2 s
• D. 1.2 hr

Answer 1

The correct option is A 1 s

Given,
Speed = $54$ kmph
[kmph read as kilometers per hour]
kmph = $\frac{5}{18}$ m/s
54 kmph = $\frac{5}{18}\times$ 54 m/s
= 15 m/s
Distance = 15 m

We know that
$\text{speed}=\frac{\text{Distance}}{\text{Time}}$

$\therefore \text{Time}=\frac{\text{Distance}}{\text{Speed}}=\frac{15}{15}=1$ s.