A ball is thrown straight up in the air with a velocity of 40 m/s. What is the speed of the ball right before it hits the ground? (neglecting air resistance) How long will the ball be in the air? How high will the ball go? After 6 s, what is the position of the ball? (above the ground) After 6 s, what is the velocity of the ball? (assume up is the positive direction) After 6 s, what is the acceleration of the ball? (assume up is the positive direction)