a child preforms an amount of work W on a wagon to increase its speed from zero to a value of v. How much more work, in terms of W, must the child do...

a child preforms an amount of work W on a wagon to increase its speed from zero to a

value of v. How much more work, in terms of W, must the child do on the wagon to increase

its speed from v to 2v? (Neglect friction.)

(a) W (b) 2W (c) 2W (d) 3W (e) 4W