# bernardo Physical Science Ch 2 motion

## 11 terms

### Distance

how far an object moves

### Displacement

distance and direction of an objects change in position from the starting point

### Speed

distance an object travels per unit of time

### Average speed

total distance an object travels divide dby the total time it takes to travel that distance

### Instantaneous speed

speed of an object at a given point in time; is constantfor an object moving with constant speed, and changes with time for an object that is slowing down or speeding up

### Velocity

the speed and direction of a mocing object

### Acceleration

rate of change of velocity; can be calculated by dividing the change in velocity by the time it takes the change to occur

### Force

a push or pull extended on an object

### Net force

sum of the forces that are acting on an object

### Balanced forces

forces on a object that combine to give a zero net force and do not change the motion of an object

### Inertia

resistance of an object to a change in its motion

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