# Chapter 2 Physics Test

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Physics Regular- Perella Period 5

### inertia

the resistance of change in an object

### inertia is related to

the amount of mass in an object

inertia you have

a push or pull

### force can change an object's

acceleration, decceleration, direction

### net force

the sum of all the forces acting on an object

0

force

acceleration

### newton second law relates

the net force, mass, and acceleration of an object

### free fall

when gravity is the only force acting on an object

air resistance

### air resistance

a force acting against gravity causing an object to deccelerate

### terminal velocity

when the net force of an object is 0 and the object is in constant speed

9.8 m/s/s

weight

slope

the slope

### to find the distance in a speed vs. time graph you must determine

the area under line

slope.

48N

73N

### ↑⁻⁻↓⁻⁻↑⁻⁻↓ air resistance and gravity are equal, the object is at

terminal velocity

Example: