Ontario Mathematics Proficiency Practice Test

To find the speed of the car in meters per second, you start by converting the distance from kilometers to meters and the time from hours to seconds.

The car travels 60 kilometers. To convert kilometers to meters, you use the conversion factor that 1 kilometer equals 1,000 meters. Thus, 60 kilometers is equal to:

60 km × 1,000 m/km = 60,000 m.

Next, you need to convert the time from hours to seconds. There are 3600 seconds in one hour (60 seconds per minute multiplied by 60 minutes per hour). Therefore:

1 hour = 3,600 seconds.

Now, to find the speed in meters per second, you divide the total distance in meters by the total time in seconds:

Speed = Distance / Time = 60,000 m / 3,600 s.

Performing the division yields:

60,000 ÷ 3,600 = 16.67 m/s.

This means the speed of the car is approximately 16.67 meters per second, making this the correct answer. Understanding these unit conversions is essential for solving problems related to speed and distance in physics and mathematics.