Asked by Jade
1. A person runs 800. m at an average speed of 6.00 m/s and then the next 800. m at an average speed of 8.00 m/s. Calculate (a) the total time of travel and (b) the average speed.
2. Sam travels by car from one city to another. He drives for 45.0 min at 95.0 km/h, 30.0 min at 100.0 km/h, and he spends 25.0 min eating lunch and buying gas. Determine (a) the total distance traveled and (b) the average speed for the entire trip.
2. Sam travels by car from one city to another. He drives for 45.0 min at 95.0 km/h, 30.0 min at 100.0 km/h, and he spends 25.0 min eating lunch and buying gas. Determine (a) the total distance traveled and (b) the average speed for the entire trip.
Answers
Answered by
MathMate
Using
Distance = speed * time
(a)
Total time of travel
=800m/6s + 800m/8s
= 233.3s
(b)
Total distance = 800+800=1600m
Average speed = total distance/total time
=1600m/233.3s
= 6.86 m/s
Try #2 which is similar to #1.
Distance = speed * time
(a)
Total time of travel
=800m/6s + 800m/8s
= 233.3s
(b)
Total distance = 800+800=1600m
Average speed = total distance/total time
=1600m/233.3s
= 6.86 m/s
Try #2 which is similar to #1.