It takes 1.0h to drive 20km through a city during rush hour. your is 20km/h
a. constant
b. average
c. instantaneous
d. accelerating

An object is 10. cm from the mirror, its height is 3.0 cm, and the focal length is 2.0 cm. what is the image height? (indicate the object orientation by including the + or - sign with the answer.) hi = cm +1.33 -1.33 +0.75 -0.75

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

In what direction does an applied force move an object