Question

QUESTION 4 A motorcycle is traveling at a speed of 10 km/h along a straight road. Express the speed in m/s? (2 MARKS]​

Answer 1

≈ 3 m/s

Step-by-step explanation:

To express the speed which is given in km/h to m/s, we can simply individually change from km to m and h to s.

We know that 1 kilometer = 1000 meters and that 1 hour = 3600 seconds. Therefore:

`\displaystyle{10 \cdot \frac{1000 \ \: \text{m} }{3600 \ \: \text{s}}}\\\\\displaystyle{=10 \cdot \frac{10 \ \: \text{m} }{36\ \: \text{s}}}\\\\\displaystyle{=\frac{100 \ \: \text{m} }{36 \ \: \text{s}}}\\\\\displaystyle{\approx 3 \ \: \text{m/s}}`

Therefore, 10 km/h will approximately equal 3 m/s as accorded to significant rules.