Amotorist drives north for 35.0 minutes at 85.0 kph. he then stops for 15.0 minutes. the motorist then drives 130.0 km in 2.0 hours. calculate the average velocity of the motorist if the second leg of the trip a. was north b. was south

A. 216.36

B. 96.56

Explanation:

Let be the distance in first part.

= velocity × time

= 85 ×

= 49.58 km

Let be the distance in first part.

= 130 km

Average velocity =

When second leg of the trip is

A. Toward north

Average velocity = }{Total time}  " alt=" s_{1} + s_{2}" />}{Total time}  " />

Average velocity =

Average velocity =216.36

B. Toward south

Average velocity = }{Total time}  " alt=" s_{1} - s_{2}" />}{Total time}  " />

Average velocity =

Average velocity =96.56

it takes about 30 days for it to break down

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers