(adsbygoogle = window.adsbygoogle || []).push({}); 1. A projectile is fired from a gun (on the ground)and has initial horizontal and vertical components of velocity equal to 30 m/s and 40 m/s, respectively.a) How long does it take the projectile to reach the highest point on the trajectory? b) What is the magnitude of the projectile's velocity just before striking the ground? c) How far does the projectile travel horizontally before it hits the ground?

2. Relevant equations

3. The attempt at a solutiona) t= vy-viy/g 0-40/9.8= 4.08s

b) v= square root of viy^2 + vix^2= 50

v=viy+gt 0-9.8*4.08=40 m/s

c) total time = 2*4.08, 30*8.16= 244.8 m

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# Homework Help: Help Projectile Motion- Firing of a gun

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