A car moves from A to B in 4 hours at an average speed of 40 miles per hour. At t=1 hour, its speed would be:
40 miles/ hr
< 40 miles/ hr
> 40 miles/ hr
Can’t say
As the average speed is given, we can’t say anything about the speed of the body at any particular instant.
A train travels at an average of 100 miles per hour for 4.5 hours and then travels at a speed of 140 miles per hour for 2.5 hours. How far did the car travel in the entire 7 hours?