While playing soccer in the house, Amanda hits her mother's 1.25 kg antique vase with the 0.250 kg soccer ball. After the collision the ball bounces back with a velocity of 3.5
m/s while the vase moves in the opposite direction with a velocity of 2.3 m/s.
a. How fast did Amanda hit the soccer ball?

Asailboat is traveling to the right when a gust of wind causes the boat to accelerate leftward at 2.5m/s2 for 4s. after the wind stops, the sailboat is traveling to the left with a velocity of 3.0m/s.assuming the acceleration from the wind is constant, what was the initial velocity of the sailboat before the gust of wind? answer using a coordinate system where rightward is positive.