In a certain sports event, called the appliance toss, men and women test their strength by hurling an electric can opener horizontally over a cliff. (See figure.) The cliff is very high, standing over a plain, and judges at the bottom determine where the openers land. When Barbara heaves her opener at t = 0 s, the opener has horizontal velocity 1.5 m/s when it leaves her hand. After 2 s, it is still in the air (point B in the diagram). (Use g = 10 m/s2.)
At t = 2 s, what is the opener's horizontal velocity?