Can anyone explain what to do for these 2 ?(adsbygoogle = window.adsbygoogle || []).push({});

1.) If a=3i-4j, and b=4i-3j, what is the magnitude of the vector a-b?

2.) A boy throws a ball at an initial velocity of 26m/s at an angle of 20 degrees above the horizontal. How high above the projection point is the ball after 1.4 seconds ?

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# Homework Help: Vector Applications

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