What does Newtons 1st Law Desribe? A. the tendency of moving objects to stay in motion
B. How force balances out of zero net force
C. The change in an objects motion over time
D. The attractive force between two objects due to their masses

Spend time observing or thinking about events that involve matter and energy. which events can you explain? which events can’t you explain?

Acar travels along a highway with a velocity of 24 m/s, west. the car exits the highway; and 4.0 s later, its instantaneous velocity is 16 m/s, 45° north of west. what is the magnitude of the average acceleration of the car during the four-second interval?

The place you get your hair cut has two nearly parallel mirrors 6.00 m apart. as you sit in the chair, your head is 2.00 m from the nearer mirror. looking toward this mirror, you first see your face and then, farther away, the back of your head. (the mirrors need to be slightly nonparallel for you to be able to see the back of your head, but you can treat them as parallel in this problem.) how far away does the back of your head appear to be?