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1. The problem statement, all variables and given/known data

How do you calculate the projectile motion of an object in the following question?

John is a long jumper. He runs down a track, and jumps as far as he can horizonally. Her take-off velocity is 6.4 m s-1 at 20 degrees from the horizontal.

a) show that the horizontal component of her initial velocity is 6.0m s-1

b) Show that the vertical component of her initial velocity is 2.2 m s-1

c) Explain why the horizontal component of her velocity is constant.

3. The attempt at a solution

I know that for a) you use vectors to solve it but I don't know what to do after that and for the others I have no idea what to do so any help is appreciated

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# Homework Help: Projectile motion

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