Use the worked example above to help you solve this problem. If a car is traveling at a speed of 28.4 m/s, what is its speed in miles per hour

The correct answer is - 63.61 miles/hour.

Explanation:

Meter and miles both are the measuring units of distance and speed units are meter per second and miles per hour. The numerical relation between these two units are as follows:

1 meter per second = 2.24 miles per hour

The car travels 28.4 m/s so in miles per hour it would be:

So, 28.4 meters per second = 28.4 * 2.24 miles per hour

28.4 meters per second = 63.61 miles per hour.

Thus, the correct answer is - 63.61 miles per hour.

answer: good job it's all correct !

explanation:

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west