2. You go to the top of a building, drop a ball, and time its descent. It takes 14 seconds. You stand at the bottom of the building, throw the
ball up so it just reaches the top and falls back down again. What is
the time required for it to go up and back down again if air resistance
does not affect it?
Please I need help!

The heater element of a 120 v toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm. the resistivity of nichrome at the operating temperature of the toaster is 1.3 × 10-6 ω·m. the toaster is operated at a voltage of 120 v. (a) what is the power drawn by the toaster? (b) if the cost of electricity is 12 ¢ per kilowatt-hour, and it takes 2 minutes to toast bread, how much does it cost for toasted bread? (c) when the heater element is at room temperature, is the resistivity in the nichrome wire greater than, less than, or equal to it’s resistivity when at operating temperature? explain.