D1 ++
-2 -1 0
1
3
4
UNE
5 6
7
8
D2
9 10
X (m)
The diagram above illustrates a person who, starting from the origin, walks 8 km east during first day, and 5 km west the next day.
Starting from the origin, a car travels 4 km east and then 7 km west. What is the traveled distance of the car from the initial point?
Select one:
O a. 4 km
O b. 3 km
O c. 3 km
O d. 7 km
O e. 11 km

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

Cathy is pedaling down a steep hill on her bicycle and wants to be able to coast up the next hill, which is 25 meters high, without pedaling. cathy and her bicycle have a mass of 75 kg. assuming her bicycle is 100% efficient, what would her speed have to be?

Arunner is jogging at a steady 3.6 km/hr. when the runner is 2.9 km from the finish line, a bird begins flying from the runner to the finish line at 14.4 km/hr (4 times as fast as the runner). when the bird reaches the finish line, it turns around and flies back to the runner. even though the bird is a dodo, we will assume that it occupies only one point in space, i.e., a zero-length bird. how far does the bird travel? (b) after this first encounter, the bird then turns around and flies from the runner back to the finish line, turns around again and flies back to the runner. the bird repeats the back and forth trips until the runner reaches the finish line. how far does the bird travel from the beginning? (i.e. include the distance traveled to the first encounter)