Vector Analysis of Throwing a Ball from a Moving Car to a Stationary Target

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SUMMARY

The discussion focuses on a physics problem involving vector analysis where a boy in a car traveling at 10 km/h north needs to throw a ball at 20 km/h towards a girl standing east of the road. To ensure the ball travels straight east relative to the girl, the boy must throw the ball at an angle that accounts for the car's northward velocity. The resultant velocity of the ball relative to the ground can be calculated using vector components, forming a right triangle to determine both the angle of the throw and the ball's total velocity.

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Vector Question please help

Homework Statement


A boy in a car moving at 10km/h[N] wants to throw a ball to a girl standing on the right-hand side of the road. He is able to throw the ball at 20km/h. He wants the ball to go straight east, directly to her.
(a) Relative to the car, which way should he throw the ball in order to do this?
(b) Relative to the ground, how fast will the ball travel to reach her?

Homework Equations


not sure (missed class)

The Attempt at a Solution


not sure (missed class)
 
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Im not comletely positive if this is right but, I think that they are giving you components of the balls velocity. The ball is moving 10 km/h N due to being in the car, and the boy can throw the ball 20 km/h E. From their you can set up a right triangle to find the angle that the ball will be moving relative to the car, and you can also find the hypotenuse which would be the balls total velocity. Again I am not completely sure, but i hope this helps.
 

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