Respuesta :
Answer:
Average speed of the car is equal to [tex]40 miles/hour.[/tex]
Explanation:
In the given question it is given that Bernie drove a distance of [tex]60 miles[/tex]. The total time taken for the drive is [tex]1.5 hours.[/tex]
distance [tex]d=60 miles[/tex]
time [tex]t= 1.5 hours[/tex]
average speed [tex]v_av= \frac{total \ distance}{total \ time}[/tex]
[tex]=d/t = 60/1.5= 40 miles/hour[/tex]
Average speed is the quantity used to define the motion of an object during a specific time interval. SI unit of speed is m/s. To find average speed of a body from the position-time graph we have to calculate the slope of the graph corresponding to the given time interval.