Abowling ball has a mass of 6 kg. what happens to its momentum when its speed increases from 2 m/s to 4 m/s?

a) the initial momentum is 6 kg*m/s, and the final momentum is 3 kg*m/s
b) the initial momentum is 12 kg*m/s, and the final momentum is 24 kg*m/s
c) the initial momentum is 12 kg*m/s, and the final momentum is 3 kg*m/s
d) the inital momentum is 6 kg*m/s, and the final momentum is 12 kg*m/s

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.