1.Whales have been determined to travel more or less in straight lines during mi

ID: 1315113 • Letter: 1

Question

1.Whales have been determined to travel more or less in straight lines during migration. Occasionally they backtrack because of food. Find the displacement of Wanda the Humpback Whale over a week, traveling 88 north on Sunday, 14 north on Monday, 136 south on Tuesday, 26 north on Wednesday, 68 south on Thursday, 131 south on Friday, and 53 north on Saturday. All measurements are in kilometers. If the displacement direction is north leave the answer positive. If the displacement is south, leave the answer with a minus sign in front. Make sure to use proper units without spaces between the number and answer.

2.An ambulance leaves the police station in Big City and travels 4.0 blocks north then 6.0 blocks east to pick up a patient. The ambulance then drives 2.0 blocks south and 9.0 blocks east to the hospital. How far (the total "distance") did the ambulance travel?

3.An ambulance leaves the police station in Big City and travels 7.0 blocks north then 5.0 blocks east to pick up a patient. The ambulance then drives 6.0 blocks south and 3.0 blocks east to the hospital. How far "as the crow flies" is the police station from the hospital

4.n ambulance leaves the police station in Big City and travels 7.0 blocks north then 7.0 blocks east to pick up a patient. The ambulance then drives 4.0 blocks south and 4.0 blocks east to the hospital. What direction (in terms of a compass reading "degrees from north") is the hospital from the police station?

5.The patient is wheeled through the emergency room entrance 29 m east down a hall to an elevator, -7 m down an elevator, and 49 m south to an operation room. How far is the emergency room entrance from the operation room?

Select all the vectors from the list below. Note you must chose the correct vectors only for full credit.

-20 meters/second of velocity change

-10 newtons/kilogram gravitational field

-6 kg of mass change

1 newton of force downward

+10 joules of energy change

F) 20 kilometers east displacement

Graph to question 7 and 8 >>>>> http://tinypic.com/r/eff9j4/8

7.Match the vectors and vector components in the image above

V1x=

V2x=

V2y=

|V1|=

|V2|=

V1y=

A. +10N

B. -10 sqr root 2 N

C. -10N

D. -6N

E. +10N

F. 10 sqr root 2 N

G. 10N

H. -8N

8. The total length of the sum of the two vectors shown in the graph above, and the angle it makes with the horizontal is..

26.6

-20 meters/second of velocity change

-10 newtons/kilogram gravitational field

-6 kg of mass change

1 newton of force downward

+10 joules of energy change

F) 20 kilometers east displacement

Graph to question 7 and 8 >>>>> http://tinypic.com/r/eff9j4/8

7.Match the vectors and vector components in the image above

Explanation / Answer

1. Total displacemet

= 88 + 14 - 136 + 26 - 68 - 131 + 53 = -154kilometers

2. Total distance = 4 + 6 + 2 + 9 = 21 blocks

Total displacement = sqrt(22 + 152) = 15.13 blocks

3. Displacement = sqrt(12 + 82) = 8.06 blocks

4. Degrees from north = tan-1(11/3) = 74.74

5. Displacement = sqrt(292 + 72 + 492) = 57.37 m

6. A, B, D, F

V1x= +10N

V2x=-8 N

V2y=-6 N

|V1|=10 aqr root 2 N

|V2|=10 N

V1y=+10 N

8 2 * sqr root 5,

63.4 deg