Cause: Unbalanced forces act on an object.
Effect:
* Change in velocity:
* Acceleration: The object speeds up, slows down, or changes direction.
* Magnitude and direction: The change in velocity is directly proportional to the net force and inversely proportional to the object's mass.
* Change in acceleration:
* Acceleration: The object experiences a non-zero acceleration.
* Magnitude and direction: The acceleration is directly proportional to the net force and inversely proportional to the object's mass.
Example:
* Cause: A car accelerates forward.
* Effect: An unbalanced force (the engine's force) causes the car to increase its velocity (speed up) and experience acceleration in the forward direction.
Diagram:
```
+---------------------+
| Unbalanced Force |
+---------------------+
|
v
+---------------------+
| Change in Velocity |
+---------------------+
|
v
+---------------------+
| Change in Acceleration |
+---------------------+
```
Key takeaway: Unbalanced forces are the key drivers of motion. They cause changes in velocity and acceleration, which ultimately dictate the object's movement.
