# 3rd Year Physics Chapter 11

### 15 terms by Ireland16

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Chapter 11 Vocabulary

### Instantaneous Speed

The rate at which an object moves at that point in time

### Speed

The ratio of the distance of an object moves to the amount of time it takes it to move

### Average Speed

The total distance traveled divided by the time it takes to travel that distance

### Velocity

The speed and direction an object is moving measured relative to a reference point

### Frame of Reference

A system of objects that are not moving with respect to one another

### Relative Motion

Movement in a relation to a frame of reference

### Displacement

A straight line from starting point to ending point

### Resultant Vector

The sum of two or more vectors

### Vector

The measure of displacement

### Distance

The length of the path traveled

### Acceleration

the rate the at which the velocity changes

### Free Fall

The movement of object towards the earth because of gravity

### linear graph

a graph which the displayed data from straight line

### nonlinear graph

a graph in which the displayed data is in a curved line

Example: