A penny is dropped from rest from a building 100m tall. what kind of motion is this A. centripetal
B. Free fall
C. Linear
D. projectile

An insurance company wants to know if the average speed at which men drive cars is higher than that of women drivers. the company took a random sample of 27 cars driven by men on a highway and found the mean speed to be 72 miles per hour with a standard deviation of 2.2 miles per hour. another sample of 18 cars driven by women on the same highway gave a mean speed of 68 miles per hour with a standard deviation of 2.5 miles per hour. assume that the speeds at which all men and all women drive cars on this highway are both approximately normally distributed with unknown and unequal population standard deviations.

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic

Which type of basaltic lava flow has a fairly smooth