Aperson travels by car from one city to another with different constant speeds between pairs of cities. she drives for 25.0 min at 95.0 km/h, 16.0 min at 100.0 km/h, and 50.0 min at 40.0 km/h and spends 30.0 min eating lunch and buying gas. determine the average speed for the trip.

49.8 km/h

Explanation:

We can determine the average speed by calculating the total distance covered and the time taken,

- First part of the trip:

v1 = 95.0 km/h = 26.4 m/s

t1 = 25.0 min = 1500 s

Distance covered:

- Second part of the trip:

v2 = 100.0 km/h = 27.8 m/s

t2 = 16.0 min = 960 s

Distance covered:

- Third part of the trip:

v3 = 40.0 km/h = 11.1 m/s

t3 = 50.0 min = 3000 s

Distance covered:

The person also spend 30.0 min without moving:

t4 = 30.0 min = 1800 s

Total distance covered:

Total time taken:

So, the average speed is

b) returns freshwater to the earth.

c) returns freshwater to the earth.c) occurs after condensation.

d) returns freshwater to the earth.c) occurs after condensation.d) roughly equal to the amount of evaporation.

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1 - wave length

2 - amplitude

3 - crest

4 - trough

explanation:

duh.