a) A ladybug with a velocity of 10.0 mm/s [W] crawls on a chair that is being pu
ID: 1789035 • Letter: A
Question
a) A ladybug with a velocity of 10.0 mm/s [W] crawls on a chair that is being pulled [W 50° N] at 40.0 mm/s. What is the velocity of the ladybug relative to the ground?
b) An airplane is flying to a city due west from its current location. If there is a slight wind blowing to the southwest, in what direction must the plane head (that is, in what direction must it point)? Explain your answer using a diagram.
c) Do research to find out how relative velocity is related to the direction in which rockets are launched to send them into space. Explain the benefits (to society and/or the environment) of using a specific direction for launching rockets.
Explanation / Answer
a)
R = (P² + Q² + 2PQ cos )
R = (10² + 40² + 2*10*40* cos50)
R = 47.1 mm/s
R cos = 10 gives = 77.74 N of W
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