All of the following describe the motion of an object except mass
speed
velocity
acceleration ​

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

Frequency of electromagnetic waves that a radio station is assigned is called

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.