Homework Help: Physics

Posted by Paige on Thursday, January 26, 2012 at 9:19pm.

Sally travels by car from one city to another. She drives for 40.2 min at 80.0 km/h, 12.0 min at 105 km/h, and 45.0 min at 40.0 km/h. She spends 13.7 min eating lunch and buying gas.
(a) Determine the total distance traveled in km.
(b) Determine the average speed for the trip in km/h.

Physics - Damon, Thursday, January 26, 2012 at 9:32pm
use minutes/60 to get times in hours

.67 * 80 = 53.6
0.2 * 105 = 21
.75 * 40 = 30
.228 *0 = 0
--------------- add times and distances
1.85 hr 104.6 km
so
(a) 104.6 km
(b) = 104.6/1.85 = 56.5 km/hr
Physics - Anonymous, Tuesday, August 28, 2012 at 8:19pm
Sally travels by car from one city to another. She drives for 20.0 min at 64.0 km/h, 37.0 min at 43.0 km/h, and 18.0 min at 66.0 km/h, and she spends 10.0 min eating lunch and buying gas.

(a) Determine the average speed for the trip.
1 . km/h
(b) Determine the total distance traveled.
2 . km

Answer this Question

Related Questions

physics - Sally travels by car from one city to another. She drives for 30.0 min...
Physics - Sally travels by car from one city to another. She drives for 28.0 min...
physics - Sally travels by car from one city to another. She drives for 24.0 min...
Physics - Sally travels by car from one city to another. She drives for 36.5 min...
Physics - Sally travels by car from one city to another. She drives for 25.0 min...
physics - A person travels by car from one city to another with different ...
physics - A person travels by car from one city to another with different ...
physics - A person travels by car from one city to another with diﬀ...
physics - A person travels by car from one city to another with different ...
physics - A motorist drives south at 26.0 m/s for 3.00 min, then turns west and ...

For Further Reading

First Name:
School Subject:
Answer: