A motorist drives north for 32.0 minutes at 80.5 km/h and then stops for 15.0 minutes. He then continues north, traveling 130 km in 1.80 h. (b) What is his average velocity?

A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 30.0 min at 50.0 km/h, 12.0 min at 60.0 km/h, and 30.0 min at 40.0km/h and spends 55.0 min eating lunch and buying gas. (a) Determine the average speed for the trip.km/h(b) Determine the distance between the initial and final cities along the route. km

A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 60.0 min at 95.0 km/h, 14.0 min at 100.0 km/h, and 60.0 min at 50.0km/h and spends 25.0 min eating lunch and buying gas. (a) Determine the average speed for the trip. (b) Determine the distance between the initial and final cities along the route.

Usually, Tony travels to Bunbury from Perth city in 2.50 hours. One day he increases his average speed by 12.0 km/h and takes 22.5 minutes less time to reach Bunbury. (a) What was his usual average speed? What was the distance travelled? (b) On the way he stopped at a rail crossing (6.00 m wide) and a train (total length 144m) decelerating at -0.585 ms2 just entered the crossing with a velocity of 13.7 m s¹. Sketch a diagram and find the minimum time for the last carriage of the train to clear the crossing.

5. A cyclist rides 8.0 km east for 20 minutes, then he turns and heads west for 8 minutes and 3.2 km. Finally, he rides east for 16 km, which takes 40 minutes. (a) What is the final displacement of the cyclist? (b) What is his average velocity?

A student drives the 105-mi trip back to campus after spring break and travels with an average speed of 63 mi/h for 1 hour and 30 minutes for the first part of the trip. (a) What distance was traveled during this time? Answer: 94.5 mi (b) Traffic gets heavier, and the last part of the trip takes another half-hour. What was the average speed during this leg of the trip?   (c) Find the average speed for the total trip.

A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 30.0 min at 85.0 km/h, 17.0 min at 90.0 km/h and 55.0 min at 40.0 km/h, and spends 35.0 min eating lunch and buying gas. (a) Determine the average speed for the trip. km/h (b) Determine the distance between the initial and final cities along this route. km

A woodchuck runs 20 m to the right in 10 s, then turns and runs 10 m to the left in 6 s. (a) What is the average velocity of the woodchuck? (b) What is its average speed?

Compute your average velocity in the following two cases: (a) You walk 73.2 m at a speed of 1.22 m/s and then run 73.2 m at a speed of 3.05 m/s along a straight track. (b) You walk for 1.00 min at a speed of 1.22 m/s and then run for 1.00 min at 3.05 m/s along a straight track. (c) Graph x versus t for both cases and indicate how the average velocity is found on the graph.

An auto travels at the rate of 25 km/h for 4.0 minutes, then at 50 km/h for 8.0 minutes, and finally at 20 km/h for 2.0 minutes. Find the average speed for the complete trip in m/s?