A projectile is shot at a velocity of #9 m/s# and an angle of #pi/8 #. What is the projectile's peak height? Physics 2D Motion Projectile Motion 1 Answer ali ergin Jan 30, 2017 #"the answer is "h_p=0.60" m"# Explanation: #"the peak height of a projectile can be calculated using:"# #h_p=(v_i^2.sin^2 alpha)/(2.g)# #"where;# #v_i:"initial velocity ,"v_i=9" m/s"# #alpha=pi/8" , "sin alpha=0.38268343" , "sin^2 alpha=0.14644661# #g=9.81 (N)/(kg)# #h_p:"peak height"# #h_p=(9^2* 0.14644661)/(2*9.81)# #h_p=(81* 0.14644661)/(19.62)# #h_p=0.60" m"# Answer link Related questions A cannon fires a cannonball horizontally with a speed of 488 m/s. A. How long will it take the... When In the absence of air resistance, why does the horizontal component of velocity for a... Why is kicking a football an example of projectile motion? Why is projectile motion parabolic? Why is horizontal velocity constant in projectile motion? How can I solve projectile motion problems without initial velocity? How does wind affect projectile motion? How does projectile motion relate to linear motion? How does mass affect projectile motion? How does gravity affect projectile motion? See all questions in Projectile Motion Impact of this question 1253 views around the world You can reuse this answer Creative Commons License