A car speeds up from 8.50 m/s to 22.2 m/s in 3.84 s.
The acceleration of the car is:
A. 20.0 m/s2
B. 7.99 m/s2
C. 2.72 m/s2
D. 3.57 m/s2

the answer is d. (1.2, -4.7) on edgn

hope this !

1. perpendicular

2. parallel

3. perpendicular

7.9m and 4.3°

step-by-step explanation:

let east be +x and north be +y, x = distance * cos θ, y = distance * sin θ  

for 3.5 south, y = -3.5  

for 8.2, x = 8.2 * cos 30 and y = 8.2 * sin 30  

for 15 west, x = -15  

total x = 8.2 * cos 30 – 15 ≈ -7.9  

total y = -3.5 + 8.2 * sin 30 = 0.6  

magnitude = [(8.2 * cos 30 – 15)^2 + 0.6^2)]^0.5  

the magnitude is approximately 7.9 m  

tan θ = y/x = 0.6/-7.9  

the angle is approximately 4.3˚ north of west

l' jhl jje f id bid b e iueb v jhdvb vh ei uf djbduv evb                                                                                                                                   8gfdgsfhjk.,l/ uh   dv eb b