An object moves from x = -2.1 m, y = 3.7 m, z = 1.4 m to x = 3.3 m, y = -1.1 m, z = 4.2 m in a time of 5.3 s.What is its average velocity?
A)(0.23 m/s)+ (0.49 m/s)+ (0.53 m/s)
B)(5.4 m/s)− (4.8 m/s)+ (2.8 m/s)
C)(1.0 m/s)− (0.91 m/s)+ (0.53 m/s)
D)(1.0 m/s)+ (0.91 m/s)+ (1.1 m/s)
E)−(1.0 m/s)+ (0.91 m/s)+ (0.53 m/s)

Question

Quizplus · Accepted Answer

The average velocity is calculated by finding the change in position divided by the time. The change in position is (3.3 - (-2.1), -1.1 - 3.7, 4.2 - 1.4) = (5.4, -4.8, 2.8). Dividing each component by 5.3 s gives (1.0 m/s, -0.91 m/s, 0.53 m/s).

An Object Moves from X = -2