Average speed = total distance / total time
total distance = 40 + 20 = 60km
total time taken = 10 + 5 = 15 minutes
Average speed = 60/15 = 4km/min
<span>Soil conservation involves protecting soil quality and preventing erosion.
Answer: A</span>
Answer:
A ball is thrown straight up with a speed of 30
m/s. What is the maximum height reached by
the ball?