Posted by **yolanda** on Monday, September 26, 2011 at 10:48am.

A projectile of mass 0.46 kg is shot from a cannon, at height 6.8 m, as shown in the ﬁgure, with an initial velocity vi having a horizontal component of 7.1m/s.

The projectile rises to a maximum height of ∆y above the end of the cannon’s barrel and strikes the ground a horizontal distance ∆x past the end of the cannon’s barrel.

----Find the vertical component of the initial

velocity at the end of the cannon’s barrel,

where the projectile begins its trajectory. The

acceleration of gravity is 9.8 m/s

2

.

Answer in units of m/s

----Determine the maximum height the projectile

achieves after leaving the end of the cannon’s

barrel.

Answer in units of m

----Find the magnitude of the velocity vector

when the projectile hits the ground.

Answer in units of m/s

----Find the magnitude of the angle (with respect

to horizontal) the projectile makes when impacting the ground.

Answer in units of ◦

-----Find the range of the projectile from the time it leaves the barrel until it hits the ground.

Answer in units of m

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