Question

A remote control helicopter travels 24.6 km in 30 minutes. Find the speed of the helicopter in: i) km/h ii) m/s

Answer 1

SOLUTION

GIVEN

A remote control helicopter travels 24.6 km in 30 minutes.

TO DETERMINE

The speed of the helicopter in : i) km/h ii) m/s

EVALUATION

Here it is given that A remote control helicopter travels 24.6 km in 30 minutes.

Now 30 minutes = 0.5 hour

(i) The speed of the helicopter

$\displaystyle\sf{ = \frac{24.6}{0.5} \: \: km/h}$

$\displaystyle\sf{ = 49.2 \: \: km/h}$

(ii) Again 30 minutes = 1800 sec

24.6 km = 24600 meters

The speed of the helicopter

$\displaystyle\sf{ = \frac{24600}{1800} \: \: m/s}$

$\displaystyle\sf{ = 13.67 \: \: m/s}$

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Answer 2

Step-by-step explanation:

The speed of the helicopter

\displaystyle\sf{ = \frac{24.6}{0.5} \: \: km/h}=

0.5

24.6

km/h

\displaystyle\sf{ = 49.2 \: \: km/h}=49.2km/h

(ii) Again 30 minutes = 1800 sec

24.6 km = 24600 meters

The speed of the helicopter

\displaystyle\sf{ = \frac{24600}{1800} \: \: m/s}=

1800

24600

m/s

\displaystyle\sf{ = 13.67 \: \: m/s}=13.67m/s