A projectile is launched straight up at 101 m/s. How fast is it moving at the top of its trajectory?
A cannonball launched with an initial velocity of 131 m/s at an angle of 45° follows a parabolic path and hits a balloon at the top of its trajectory. Neglecting air resistance, how fast is it going when it hits the balloon?
What is the acceleration of the cannonball just before it hits the balloon?