Question

A car is traveling at a rate of 108 kilometers per hour. What is the cars rate in meters per second? How many meters will the car travel in 20 seconds?

Answer 1

Explanation:

A car is traveling at a rate of 108 kilometers per hour

Speed of car = 108 km/hr

Converting into m/s,

• 1 km = 1000 metres
• 1 hr = 3600 seconds .

`\longrightarrow\tt 108 * \frac{10{ \cancel{00}}}{36{ \cancel{00} }}`

`\longrightarrow\tt 108 * (5)/(18)`

`\longrightarrow\tt (540)/(18)`

`\longrightarrow \tt 30 \: m/s`

So the speed of car is 30 m/s

Time is 20 seconds.

Distance = speed × time

• 30m/s × 20 seconds
• 600 m

Hence the distance covered by the car is 600 meters

Answer 2

• 30 m/s; 600 m

----------------------

Convert the speed considering that:

• 1 km = 1000 meters and
• 1 hr = 3600 seconds

Calculate the speed:

• 108 km/h =
• 108 * 1000/3600 m/s =
• 1080/36 m/s =
• 30 m/s

The distance in 20 seconds:

• 30 * 20 =
• 600 m