A toy car of mass 0.4kg is thrown against a steel wall. when it strikes the steel wall it is moving horizontally to the left at 30m/s and it rebounds horizontally to the right at 20m/s. Findthe impulse of the force exerted on the toy car by the steel wall.

The 39 percent and 38 percent tax rates both represent what is called a tax "bubble." suppose the government wanted to lower the upper threshold of the 39 percent marginal tax bracket from $335,000 to $208,000. what would the new 39 percent bubble rate have to be? (do not round intermediate calculations. enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)