1. If a biker rides west for 50 miles from his starting position, then turns and bikes back east 80 miles. What is his net displacement?
2. If a space shuttle orbits Earth once, what is the shuttle's distance traveled and displacement?
3. Four bicyclists travel different distances and times along a straight path. Which cyclist traveled
with the greatest average speed?

How does the image distance (di) of a convex lens compare with the image distance of a concave lens? a. the image distance of the convex lens is positive, and that of the concave lens is negative. b. both are negative for a virtual image. c. both are positive for a virtual image d. the image distance of the convex lens is negative, and that of the concave lens is positive.

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

Aracecar driver has to hold on tightly when going around a banked curve. approximately what is the centripetal force on a 2220.0 kg car going around a circle with a diameter of 190.0 meters at 25.0 m/s?