What expresses a scalar quanitity?
a cat walks 5 meter in a garden.
a car move 40 m/s to the northeast
a plane flies to an airport located 350 meters to the south.
a person goes on a 3-kilometer jog from home to the store.

Describe different biomes. what are some adaptations that organisms (plants or animals) must have to live in each biome?

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

Very large accelerations can injure the body, especially if they last for a considerable length of time. one model used to gauge the likelihood of injury is the severity index ( ), defined as =/ . in the expression, is the duration of the accleration, but is not equal to the acceleration. rather, is a dimensionless constant that = the number of multiples of that the acceleration is equal to.in one set of studies of rear-end collisions, a person's velocity increases by 13.7 km/h with an acceleration of 36.0 m/s2 . let the + direction point in the direction the car is traveling. what is the severity index for the collision?