How might you use a model of bumper car to determine how speed and acceleration affect the motion of the car? What materials might you use?

Amira pulls a 3 pound wagon 4 feet. how much work has she done?

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.

If the area of a square has increased by a factor of 16, by how much has each side increased?