Astudent runs 100 meters in 11 seconds. what is the speed of the student?
use the following formulas: speed = distance/time; 1 mile = 1609 meters

a.) 9.1 miles per hour
b.) 16 miles per hour
c.) 20.3 miles per hour
d.) 24 miles per hour

When an object moves in uniform circular motion, the direction of its acceleration is a) in the same direction as its velocity vector. b) in the opposite direction of its velocity vector c) is directed toward the center of its circular path. d) is directed away from the center of its circular path. e) depends on the speed of the object.

An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?

Question part points submissions used suppose that 2 j of work is needed to stretch a spring from its natural length of 26 cm to a length of 36 cm. (a) how much work is needed to stretch the spring from 28 cm to 32 cm? (round your answer to two decimal places.)