Answer:
1. Speed
Explanation:
"how far an object moves in a certain amount of time"
"how far an object moves"- <em>distance</em>
"In a " - <em>over</em>
"certain amount of time" - <em>time</em>
<em>Distance over time is speed. </em>
The speed of an object is the distance the object travels in one unit of time.
<em>Hope I Helped, Feel free to ask any questions to clarify :)</em>
<em>Have great day!</em>
<em> -Aadi x</em>
Answer:

Explanation:
The magnitude of the magnetic force on the proton is given by:

where:
is the proton charge
is the proton velocity
is the magnetic field
is the angle between the direction of v and B
Substituting into the formula, we find

Hot and cold water rising and sinking through other water
is definitely a description of convection.
Explanation:
Acceleration is the change in speed over a given time period