10. A car starts from rest at a stop light and reaches 20 m/s in 3.5
s. Determine the acceleration of the car.
a) 2.2m/s2
b) 7.0m/s2
c) 5.7m/s2
d) 70m/s2

The image shows the positions of a car on a roller coaster track. arrange the cars in order based on their gravitational potential energy. begin with the lowest potential energy and end with the highest.

Astudent wears sunglasses to her read a book more easily which wave interaction occurs as light passes from the air into the plastic lenses? a polarization b.refraction c.diffraction d. interference

Consider a system to be two train cars traveling toward each other. what is the total momentum of the system before the train cars collide?   kg • what must the total momentum of the system be after the train cars collide?   kg •