A bike rider approaches a hill at a speed of 7.7 m/s. The combined mass of the...

J

Jocelyn

New member
...bike and the rider is 79 kg.? (a) Identify a suitable system. (What objects should be considered in the system? Select all that apply.)
-rider
-bike
-wind
-Earth
-the hill
-Moon

(b) Find the initial kinetic energy of the system.
_____ J

(c) The rider coasts up the hill. Assuming that there is no friction, at what height will the bike come to rest?
_____ m


any help with this? thank you very much
 
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