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G-nious

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**Help with 2 really easy assignments please :)**

Hey there, fellas! I'm finnish so I probably don't know all the right terms (if any!), but I hope you get the point. So;

An Audi A3 (mass 1205 kg) is overtaking a Volvo XC (mass 2113kg and velocity 40km/h) at 55 km/h

a) Calculate the cars' motion energies

b) On how big a hill would the Volvo have to drive to have as much potential energy as the Audi has motion energy?

An Audi A3 (mass 1205 kg) is overtaking a Volvo XC (mass 2113kg and velocity 40km/h) at 55 km/h

a) Calculate the cars' motion energies

b) On how big a hill would the Volvo have to drive to have as much potential energy as the Audi has motion energy?

Here's the second one;

**A swimmer dives in the water from 10 metres. His mass is 85kg**

a) What's the biggest amount of potential energy he can get, errr.. "compared to the water". It's kinda hard to translate this one :/

b) What is his speed on the moment he hits the water?

c) at which height does the swimmer have 50% less velocity than in part b)?

a) What's the biggest amount of potential energy he can get, errr.. "compared to the water". It's kinda hard to translate this one :/

b) What is his speed on the moment he hits the water?

c) at which height does the swimmer have 50% less velocity than in part b)?

Hope the language isn't all that bad.. :/ Those two are really easy assignments for you I guess :)