can anyone please show me examples for these formulas?

Question

i have a science test 2morow and i'm still kind of confused. how would i use a= v2-v1 divided by time. and the other formula v= divided by t

Answer 1

first one:
car is traveling at 10 m/s. It then speeds up to 20 m/s in 5 seconds. what is the acceleration?
Answer:
a=(v2-v1)/t
a=(20-10)/5
a=2

Second one:
You walk 100 meters in 20 seconds. If you had the same speed throughout, what was it?
Answer:
v=d/t
v=100/20
v=5 m/s

Hope that helps

Answer 2

The first one is an equation for calculating acceleration or change in velocity over time. Example: If you were driving your car and stepped on the gas, you went from 44 feet per second to 88 feet per second in 30 seconds, what would be your acceleration? a = (88 ft/sec - 44 ft/sec) / 30 sec.
a = 44 ft/sec / 30 sec
a = 1.467 ft/sec^2

The second equation is for calculating velocity when you have the distance traveled and time it took to travel that distance. The velocity "V" equals the distance traveled "d" divided by the time "t". Example: If you are driving the same car, and you time yourself between mile markers, you take down the following observations - the distance is 1 mile, and the time it took to drive it is 1 minute. Give the velocity in miles per hour.
V = d/t; therefore, V = 1 mile / 1 minute = 1 mi/min.
converting to mi/hr (multiply by 60 min/hr)
V = 1 mi/min X 60 min/hr = 60 mi/hr is the velocity that you drove.

I hope this helps clear it up for you

Answer 3

Your equations are likewise confused.

Acceleration is the change in velocity for a given change in time.