contestada

A boat travels at 15 m/s in a direction 45 east of north for an hour The boat then turns and tra
direction 5° north of east for an hour!
What is the magnitude of the boat's resultant velocity? Round your answer to the nearest whol.
m/s
What is the direction of the boat s resultant velocity? Round your answer to the nearest whole

Respuesta :

Answer:

V1 = 15m/s[45o E of N.] = 45o N. of E.

V2 = 18m/s[5o N. of E.].

Vr = 15m/s[45o] + 18m/s[5o].

Vr = 15*Cos45+15*sin45 + 18*Cos5+18*sin5.

Vr = (10.61+10.61i) + (17.93+1.57i) = 28.54 + 12.18i.

Magnitude = sqrt(28.54^2 + 12.18^2) =

Tan A = Y/X = 12.18/28.54 = 0.42887. A =

0  2

posted by Henry

Apr 8, 2017

31 m/s

23 ° north of east

Explanation: