Answer:
b.
Explanation:
Conceptual analysis
The average velocity (v) is defined as the ratio between the displacement (d) that a body performed and the total time (t) that the displacement lasted and is calculated using the following formula:
Formula (1)
v: velocity
d: Displacement
t: Time
Known data:
d = 30 miles
Problem development
We replace data in formula (1):
=
Answer:Idrk man
2000joules
work done=force×meters