Question
A speedboat moves on a lake with initial velocity vector v1,x = 8.57 m/s and v1,y = -2.61 m/s, then accelerates for 6.67 seconds at an average acceleration of aav,x = -0.105 m/s2 and aav,y = 0.101 m/s2. What are the components of the speedboat\'s final velocity, v2,x and v2,y?
Find the speedboat's final speed?
Answers
Henry
Xo = 8.57 m/s
Yo = -2.61 m/s
a. X = Xo + a*t = 8.57 + (-0.105)*6.67 = 7.87 m/s
Y = Yo + a*t = -2.61 + 0.101*6.67 = -1.94 m/s
b. V^2 = X^2 + Y^2 = 7.87^2 + 1.94^2 =
65.7
V = 8.11 m/s.
Yo = -2.61 m/s
a. X = Xo + a*t = 8.57 + (-0.105)*6.67 = 7.87 m/s
Y = Yo + a*t = -2.61 + 0.101*6.67 = -1.94 m/s
b. V^2 = X^2 + Y^2 = 7.87^2 + 1.94^2 =
65.7
V = 8.11 m/s.