as soon as possible

An airplane travels 200 km to the west and then 150 km west 60 north. The displacement, direction and direction is:

(2 points)

a) 304.1km, 2517 north

b) 100km 30 20

c) 75km, 3522 2. Three forces act on a point solid at p. of 150. The resulting force is:

(2 points)

a) 223n

b) 425n

c) 323n 3. Simplifying the expression 2A+B+3C-2A-2B-2(2a-3b-c) The answer is:

(2 points)

a) 5A-3b +c

b) 4A-2B+2C

c) 2A-2b+2c 4. The position vectors p and q where p= 2i+3j-k and q= 4i-3j+2k. Determining pq as a function of i, j and k is:

(2 points)

a) 2i-6j+k

b) 3i-8j+2k

c) i-4j+3k 5. Given the two displacements D= (6i+3jm k)m and E=(4i-5j+8k)m. The magnitude of the displacement of 2D-E is:

(2 points)

a) 14m

b) 17m

c) 19m 6. Given K.K the result is:

(2 points)

a) 0

b) -1

c) 1 7. The scalar product can be positive, if the angle is between:

(2 points)

a) 0 and 90

b) 90 and 180

c) 180 and 270 8. Given two vectors A= 4i+3j and B=5i+2j. The magnitude of each vector is:

(2 points)

a) 3 and 4

b) 5 and 5-39

c) 6 and 7 9. The dot product of the vectors A= 4i+3j and b= 5i+2j is:

(2 points)

a) 13y 60

b) 14 and 58.7

c) 15 and 55 10. Let a and b be two vectors with different directions and A= (x+4y) a+ (2x+y+1) by B=(y-2x+2) a+(2x-3y-1) b. The values of x and y such that 3a=2b, are:

(2 points)

a) 3 and 2

b) -2 and 5

c) 2 and -1