An
archer pulls her bow string back .36 m…

And

A 1000 kg sports car…

11 and 12 please

11. CHS EQ – An archer pulls her bow string back 0.360-m by exerting a force that increases uniformly from zero to 228-N. It is known from the given data that the spring constant -41-N/m (a) How much potential energy (spring) is stored in the spring system? (b) With what speed did a 10.0-g arrow leave the bow with? 12. CHS EQ Depending on the power equation used, you may need to use Ch4 to find net force- A 1000-kg sports car accelerates from zero to 25-m/s in 7.2 seconds. What is the average power delivered by the car engine? Ignore any friction in the system.