## ASVAB General Science Motion Practice Test 821877

 Questions 5 Focus Motion Topics Acceleration, Vectors, Velocity Question Type Questions

#### Study Guide

###### Acceleration

Acceleration is the rate of change of velocity per unit of time. In physics, the delta symbol ($$\Delta$$) represents change so the formula for acceleration becomes $$\vec{a} = { \Delta \vec{v} \over t }$$

###### Vectors

Velocity and displacement are vector quantities which means each is fully described by both a magnitude and a direction. In contrast, scalar quantities are quantities that are fully described by a magnitude only. A variable indicating a vector quantity will often be shown with an arrow symbol: $$\vec{v}$$

###### Velocity

Velocity is the rate at which an object changes position. Rate is measured in time and position is measured in displacement so the formula for velocity becomes $$\vec{v} = { \vec{d} \over t }$$