6. A dog sees a flowerpot sail up and then back down past a window which is 1.47m high. If the total time the pot is in sight is 1.0 s, find the height above the window the pot rises.

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Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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1. A woman and her dog are out for a morning run to the river, which is located 4.0 km away. The woman runs at
2.5 m/s in a straight line. The dog is unleashed and runs back and forth at 4.5 m/s between his owner and the
river, until she reaches the river. What is the total distance run by the dog?
2. A car makes a 60 km trip with an average velocity of 40.0 km/h in a direction due north. The trip consists of
three parts. The car moves with a constant velocity of 25 km/h [N] for the first 15 km and 62 km/h [N] for the
next 32 km. With what constant velocity does the car travel for the last 13 km segment of the trip?
3. A locomotive is accelerating at 1 6 m/s2. It passes through a 20.0 m wide crossing in a time of 2.4 s. After the
locomotive leaves the crossing, how much time is required until its speed reaches 32 m/s?
4. In the 100-m dash a sprinter accelerates from rest to a top speed with an acceleration whose magnitude is 2.68
m/s. After achieving top speed, he runs the remainder of the race without speeding up or slowing down. If the
total race in run in 12.0 s, how far does he run during the acceleration phase?
5. A roof tile falls from rest from the top of a building. An observer inside the building notices that it takes 0.20 s
for the tile to pass her window, whose height is 1.6 m. How far above the top of the window is the roof?
6. A dog sees a flowerpot sail up and then back down past a window which is 1.47m high. If the total time the pot
is in sight is 1.0 s, find the height above the wvindow the pot rises.
7. Suppose the first one-fourth of the distance between two points is covered with an average velocity of +18 m/s.
The average velocity for the remainder of the trip is +51 m/s. What is the average velocity for the entire trip?
8. A train has a length of 92 m and starts from rest with a constant acceleration at t = 0. At this instant, a car just
reaches the end of the train Thecar is mouing with a constant velcitu Att= 14s the car reaches he front of
ailable
amazan
%2:
Transcribed Image Text:1. A woman and her dog are out for a morning run to the river, which is located 4.0 km away. The woman runs at 2.5 m/s in a straight line. The dog is unleashed and runs back and forth at 4.5 m/s between his owner and the river, until she reaches the river. What is the total distance run by the dog? 2. A car makes a 60 km trip with an average velocity of 40.0 km/h in a direction due north. The trip consists of three parts. The car moves with a constant velocity of 25 km/h [N] for the first 15 km and 62 km/h [N] for the next 32 km. With what constant velocity does the car travel for the last 13 km segment of the trip? 3. A locomotive is accelerating at 1 6 m/s2. It passes through a 20.0 m wide crossing in a time of 2.4 s. After the locomotive leaves the crossing, how much time is required until its speed reaches 32 m/s? 4. In the 100-m dash a sprinter accelerates from rest to a top speed with an acceleration whose magnitude is 2.68 m/s. After achieving top speed, he runs the remainder of the race without speeding up or slowing down. If the total race in run in 12.0 s, how far does he run during the acceleration phase? 5. A roof tile falls from rest from the top of a building. An observer inside the building notices that it takes 0.20 s for the tile to pass her window, whose height is 1.6 m. How far above the top of the window is the roof? 6. A dog sees a flowerpot sail up and then back down past a window which is 1.47m high. If the total time the pot is in sight is 1.0 s, find the height above the wvindow the pot rises. 7. Suppose the first one-fourth of the distance between two points is covered with an average velocity of +18 m/s. The average velocity for the remainder of the trip is +51 m/s. What is the average velocity for the entire trip? 8. A train has a length of 92 m and starts from rest with a constant acceleration at t = 0. At this instant, a car just reaches the end of the train Thecar is mouing with a constant velcitu Att= 14s the car reaches he front of ailable amazan %2:
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