 1
 0
 Homework Statement

A cannon fires a ball at 140 m/s
at an angle of 35 degrees above
the horizontal.
• Find the position of the ball 9.25
seconds after launch.
• Find its velocity 9.25 seconds after
launch.
• Is the ball on its way up or down?
• How long does it take the ball to
arrive at the same level as it was
launched?
• What is its velocity when it arrives at
the same level as it was launched?
• What is the angle at which it arrives
at the same level as it was launched?
 Homework Equations

v_x=v_xi
xx_i=v_xi(t)
𝑣𝑦 = 𝑣𝑦𝑖 − 𝑔t
𝑦 − 𝑦𝑖 = 𝑣𝑦(t)1/2gt^2