Answer:
Constructing a hypothesis, test with an experiment, do background research are all steps of a scientific method which includes prediction.
Hope this helps :D ;-))
The difference between speed and velocity is that velocity is speed with a direction vector associated with it. It's that direction vector that makes them different. Let's back up a bit and review. Speed is displacement (distance traveled) per unit time. Velocity is displacement (distance traveled) per unit time in a given direction. The "directionallity" associated with velocity makes it a vector quantity, while speed is a scalar quantity.
Answer:D. to generate interest among the audience
Explanation:
The preview of a presentation should generally include an attention-catcher, a positioning statement, and an overview. The objective of a preview is to accomplish the following: create interest, show benefits, demonstrate value, and encourage action.
