physics
posted by Uber confused .
You ride your bike for 1.9 h at an average velocity of 10 km/h, then for 30 min at 11 km/h. What is your average velocity?

Average velocity
= total distance travelled / total time
Total distance = 1.9h*10 km/h + 0.5h*11km/h
Total time = 1.9h+0.5h
So average velocity = ? 
11.25 km/h

Average velocity is the total displacement divided by the total time.
t1= 1.5 hour (time)
t2= 30 minutes (time)
v1= 10 km/h (velocity)
v2= 18 km/h (velocity)
d1= 10 km/h x 1.5 hour = 15 km
d2= 15 km/h x 0.5 minutes = 7.5 km *convert the minutes to hour to get the answer 7.5*
15 km + 7.5 km (add the distance) = 22.5

1.5 h + 0.5 = 2 (divided by time) = 2
so, the answer will be 11.25 km/h.
Respond to this Question
Similar Questions

Physics
def of average velocity = t^1 (x  x0) (average velocity = t^1(xx0))t=(avearge velocity)t + x0= x  x0 + x0 = x = (average velocity)t + x0 x = (average velocity)t + x0 def of average velocity were costant acceleration is assumed … 
Physics
A runner runs 2.9 km in 9 min and then takes 30 min to walk back to the starting point. (a) What is the runner's average velocity for the first 9 min? 
physics
Question part Points Submissions 1 0/1 5/15 Total 0/1 You ride your bike for 1.5 h at an average velocity of 11 km/h, then for 30 min at 15 km/h. What is your average velocity? 
velocity
crystal can ride her bike 10 km in 2.1 hours, what is her average velocity? 
physics
A jogger runs in a straight line with an average velocity of v1=6.6 m/s for t1=6.0 min, and then with an average velocity of v2=5 m/s for t2=3.0 min. What is her average velocity during this time? 
physics
A jogger runs in a straight line with an average velocity of v1=10.2 m/s for t1=6.0 min, and then with an average velocity of v2=7.7 m/s for t2=3.0 min. What is her total displacement? 
Physics
A jogger runs in a straight line with an average velocity of 7.6 m/s for 6.3 min, and then with an average velocity of 3.6 m/s for 3.4 min. What is her total displacement? 
Physics
Could someone please review my answers and tell me if I am on the right track? 
Physics
A jogger runs eastward in a straight line with an average speed of 2.25 m/s for 4.98 min and then continues with an average speed of 1.58 m/s for 2.18 min. (Hint: time is in minutes and velocity is in meters/second) (a) What is her … 
Physics
A jogger runs in a straight line with an average velocity of 5.4 m/s for 2.3 min, and then with an average velocity of 5.7 m/s for 1.2 min. What is her total displacement?