Physics

# Section Summary

PhysicsSection Summary

### 3.1Acceleration

• Acceleration is the rate of change of velocity and may be negative or positive.
• Average acceleration is expressed in m/s2 and, in one dimension, can be calculated using $a ¯ = Δv Δt = v f − v 0 t f − t o . a ¯ = Δv Δt = v f − v 0 t f − t o .$

### 3.2Representing Acceleration with Equations and Graphs

• The kinematic equations show how time, displacement, velocity, and acceleration are related for objects in motion.
• In general, kinematic problems can be solved by identifying the kinematic equation that expresses the unknown in terms of the knowns.
• Displacement, velocity, and acceleration may be displayed graphically versus time.
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