My main problem right now is that i can't figure out most of the 2 dimensional problems. I try sketching it out but i'm finding it really hard. Can anyone help me figure out strategies to help me to beable to draw or sketch them out in the future. 1) A passenger in a hot-air balloon throws a ball with an intial unknown velocity. The ball accelerates at 9.8 m/s² [down] for 2.0 s, at which time its instantaneous velocity is 24 m/s [45º below the horizontal]. Determine the ball's initial velocity. 2) At 3:00 PM a truck travelling on a winding highway has a velocity of 82.0 km/h [38.2º E of N]; at 3:15 PM it has a velocity of 82.0 kn/h [12.7º S of E]. Assuming that +x is east and +y is north, determine the x- and y-components of the average acceleration during this time interval.