Accelerates from rest at 4.5m/s2. How much time does it need to
attain a speed of 5m/s?

c. newton's third law of motion

c. magnitude and direction

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.