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The driver of a car going 90 km/hr suddenly sees the lights of a road blocking barrier 40.0 m ahead.

(A) What is the speed of the car in m/s ?

User Ntysdd
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1 Answer

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Final answer:

To convert the car's speed from 90 km/h to m/s, divide by 3.6, resulting in a speed of 25 m/s.

Step-by-step explanation:

To convert the speed of a car from kilometers per hour (km/h) to meters per second (m/s), we use the conversion factor where 1 km/h is equivalent to approximately 0.27778 m/s. This conversion factor is derived from the fact that 1 km equals 1000 meters, and 1 hour equals 3600 seconds.

To convert 90 km/h to m/s:

Divide 90 by 3.6 (since 1 km/h = 1000 m / 3600 s = 0.27778 m/s)

90 km/h ÷ 3.6 = 25 m/s

To convert the speed from km/h to m/s, we can use the following conversion factor

1 km/h = 0.278 m/s

So, to find the speed of the car in m/s, we can multiply the speed in km/h by the conversion factor:

90 km/h * 0.278 m/s = 25.2 m/s

Therefore, the car traveling at 90 km/h is moving at 25 m/s.

User Suyog Patil
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