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WebsWeWeave
Group Title
A swimmer travels from the south end to the north end of a 30.0 m pool in 15.0 s and makes the return trip to the starting position in 19.0 s. What is the average velocity for the roundtrip?
a.
2.50 m/s to the south
c.
2.50 m/s to the north
b.
2.27 m/s to the north
d.
0.0 m/s
 one year ago
 one year ago
WebsWeWeave Group Title
A swimmer travels from the south end to the north end of a 30.0 m pool in 15.0 s and makes the return trip to the starting position in 19.0 s. What is the average velocity for the roundtrip? a. 2.50 m/s to the south c. 2.50 m/s to the north b. 2.27 m/s to the north d. 0.0 m/s
 one year ago
 one year ago

This Question is Closed

WebsWeWeave Group TitleBest ResponseYou've already chosen the best response.0
it's not A
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.3
average velocity = total distance travelled  total time taken
 one year ago

undertakeriivv Group TitleBest ResponseYou've already chosen the best response.0
ok uh velocity = distance/time x = 30/15 x = 30/19
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.3
total distance = 2*30 meters total time = 15 + 19 seconds
 one year ago

mathmate Group TitleBest ResponseYou've already chosen the best response.1
Velocity = (final distance  initial distance)/time =(00)/(15+19) =0
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.3
strictly speaking , in classical mechanics the formula i gave you is for the average SPEED which is independent of the direction, whereas velocity has both speed and direction.
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.3
mathmate has it
 one year ago

WebsWeWeave Group TitleBest ResponseYou've already chosen the best response.0
@mathmate Joe is on a crosscountry trip from New York to Los Angeles. He drives for 45.0 min at 70.0 km/h, 10.0 min at 95 km/h, and 30.0 min at 55.0 km/h, and he spends 20.0 min eating lunch and buying gas. What is the average speed for this part of his trip? a. 67.6 km/h c. 54.7 km/h b. 68.4 km/h d. 53.8 km/h
 one year ago

WebsWeWeave Group TitleBest ResponseYou've already chosen the best response.0
@patdistheman Two cars drive in the same direction along a straight road, at a constant speed  one at 70 km/hr and the other at 80 km/hr. Assuming that they start at the same point and at the same time, how much sooner would the faster car arrive at a destination 460 km away? a. 49 minutes c. 5.75 hrs b. 6.6 hrs d. 741 minutes
 one year ago

patdistheman Group TitleBest ResponseYou've already chosen the best response.0
I do not see how this can be 0. A swimmer travels from the south end to the north end of a 30.0 m pool in 15.0 s and makes the return trip to the starting position in 19.0 s. What is the average velocity for the roundtrip? a. 2.50 m/s to the south c. 2.50 m/s to the north b. 2.27 m/s to the north d. 0.0 m/s
 one year ago

WebsWeWeave Group TitleBest ResponseYou've already chosen the best response.0
is it c @patdistheman
 one year ago

patdistheman Group TitleBest ResponseYou've already chosen the best response.0
A total distance of 60 meters is traveled in 34 seconds it would seem the average velocity would be (60/34) = 1.765 m/s.
 one year ago

mathmate Group TitleBest ResponseYou've already chosen the best response.1
@mathmate Joe is on a crosscountry trip from New York to Los Angeles. He drives for 45.0 min at 70.0 km/h, 10.0 min at 95 km/h, and 30.0 min at 55.0 km/h, and he spends 20.0 min eating lunch and buying gas. What is the average speed for this part of his trip? a. 67.6 km/h c. 54.7 km/h b. 68.4 km/h d. 53.8 km/h What you would do is to tabulate the time and distances. dw:1357264764179:dw Average speed = total distance/total time = 95.8333/1.75 hr. = 54.76 km/hr
 one year ago
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