What was the hiker's average velocity? Distance = 6km West
Starting Time = 9:45
Ending Time = 10:45
A.
4.0 km/h south
B.
0.10 km/h north
C.
10 km/h south west
D.
6 km/h west
7 answers
The hiker spent one hour going 6 km west.
ok ty
You are welcome.
How do you figure the average speed of something? What is the formula?
divide the total distance by the total time. That gives the average SPEED.
If you divide the total DISPLACEMENT (which includes the effect of the directions of the VELOCITY vectors) by the total time you get the average VELOCITY
for example
walk one mile north at 1 mile/hr
then
walk one mile east at 1 mile per hour
your DISTANCE walked is 2 miles in one hour so your average speed was miles/hour
BUT
your DISPLACEMENT VECTOR was 1.414 miles Northeast.
so
your average VELOCITY VECTOR was 1.414/2 = .707 miles/hour NORTHEAST
(note velocity has both speed and direction. Speed only has speed.
For speed and distance you need a speedometer and a clock. For velocity you need a speedometer, clock AND a compass.
If you divide the total DISPLACEMENT (which includes the effect of the directions of the VELOCITY vectors) by the total time you get the average VELOCITY
for example
walk one mile north at 1 mile/hr
then
walk one mile east at 1 mile per hour
your DISTANCE walked is 2 miles in one hour so your average speed was miles/hour
BUT
your DISPLACEMENT VECTOR was 1.414 miles Northeast.
so
your average VELOCITY VECTOR was 1.414/2 = .707 miles/hour NORTHEAST
(note velocity has both speed and direction. Speed only has speed.
For speed and distance you need a speedometer and a clock. For velocity you need a speedometer, clock AND a compass.
your DISTANCE walked is 2 miles in two hours so your average speed was 1 mile/hour
no uwu
2 answers