A 130 g ball moves horizontally with velocity for t > 0 s.

a) What is the velocity of the ball at t = 1 s? (5 points, out of which 2 points are for a sketch representing the problem on a coordinate system).

b) What is the acceleration of the ball at t = 1 s. (5 points, out of which 3 points are for showing all the steps clearly when taking the derivative, and 1point is for the answer to two significant figures with the units).

c) What is the net force on the ball at t = 1 s. (5 points, out of which 2 points are for the equation being used and its name and 1point is for the answer to two significant figures with the units).