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**so, basically we are looking to find out which would have a greater impact:-**

a 1500kg vehicle travelling at a constant speed of 50mph

or

a 2000kg vehicle travelling at a constant speed of 30mph

a 1500kg vehicle travelling at a constant speed of 50mph

or

a 2000kg vehicle travelling at a constant speed of 30mph

*we are basing this on impact with a stationary object with no movement, eg a solid wall.*

Now i know that F = MA, but with the speed being constant then surely there would be no acceleration?

is there anyway we can calculate this with just the information provided? or does stopping time/distance have to get involved (as this is just a theoretical question, we havent actually got any of these factors)

Please Help