Question

3. Express each of the following in m s-1
(a) 1 km h-1 (b) 18 km min-1​

Answer 1

Answer:

(b) 18 km min -1 is the correct answer

Answer 2

Answer:

Using formula:-

$\frac{5}{18} \times speed \: \: in \: \: km/h$

Solution 1:-

1km/h

$\frac{5}{18} \times 1km/h$

$= \frac{5km/h}{18}$

= 0.277

= 0.28 km/h

Solution 2:-

18km/h=18000m/min

$Speed \: \: in \: \: m/s= \frac{18000}{60} (1 \: \: min \: \: = 60 \: \: sec)$

=300m/s