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MBBphys
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Homework Statement
This was a question I came across in my A level physics course:
A garage attendant was surprised to be asked to give a lorry a push as the battery was flat. He was even more surprised when he leant on the back of the lorry and the slight movement of the lorry was enough to start the engine. Explain, in terms of momentum, how the garage attendant was able to get the lorry started.
Homework Equations
p=mv
The Attempt at a Solution
I didn't understand how this linked to momentum. Pushing a vehicle makes the motor turn, but how does it actually get the engine to start?
Thank you in advance for your help :)
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