Question

A car travels 720 miles at 60mph. how long did it take the car to travel this distance?

Answer 1

Hint: In this question, we will use the basic relation between speed, distance and time. We will substitute the given values in this equation and further we will solve for time t. we will also see the basic difference between speed and velocity for our better understanding.

Formula used:
$d = vt$

Complete step by step solution:
As we know the relation between distance, speed and time is given by:
$d = vt$
$ \Rightarrow t = \dfrac{d}{v}$
Here, t is the time, d is distance and v is the speed or velocity of the object or body.

Now, we substitute the given values in the above equation to find the time taken by the car to travel the given distance at the given speed:

$t = \dfrac{{720miles}}{{60miles/hr}}$
$\therefore t = 12hrs$

Therefore, we get the required result in 12 hours.

Additional information:
We already know the basic difference between speed and velocity i.e., speed is given as the measure of how fast an object can travel, whereas velocity gives us the direction of this speed. Also, speed is a scalar quantity which means that it has only magnitude, whereas velocity is a vector quantity which means that it has both magnitude and direction. The S.I unit of both speed and velocity is meter per second (m/sec).

Note:
Here, it is important to remember most speedometers have a maximum limit up to 140-160 mph. We know that the S.I unit of speed is m/sec but the speedometer shows the value in km/h. Therefore, the question can be directly solved by having an idea of the unit of speed.