If m1 is thrown with an angle of [tex]\theta[/tex] from the ground at the same time m2 drops in free motion from the top of a ceiling, prove that(adsbygoogle = window.adsbygoogle || []).push({});

(1) If m1 aims at m2, as long as the initial velocity is large enough, m1 will hit m2

(2) The inital velocity V must be larger than [tex][gR/(sin2\theta]^1/2[/tex]

My calculations:

for m1:

1. R=Vcos[tex]\theta[/tex]t

2. y1=Vsin[tex]\theta[/tex]t-0.5g[tex]t^2[/tex]

for m2:

y2=0.5g[tex]t^2[/tex]

but i'm stuck on what to do next...

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# Projectile motion proof

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