Energy, Forces and Motion 2

Speed is the distance traveled per unit of time, often measured in miles per hour (mph) or meters per second (m/s).

Speed = Distance / Time.

Constant speed means an object covers equal distances in equal intervals of time, without changing its speed.

A distance-time graph shows how the distance of an object changes over time, with distance on the vertical axis and time on the horizontal axis.

A steeper slope indicates that the object is moving faster.

Precise measurements ensure that experiments can be replicated and that results are reliable.

A hypothesis is a testable prediction about the relationship between variables in an experiment.

A control is a standard for comparison that helps to isolate the effects of the independent variable.

Distance is the total path length traveled, while displacement is the shortest straight-line distance from the starting point to the endpoint.

Acceleration is the rate of change of velocity of an object, which can occur due to a change in speed or direction.