Which car has a greater magnitude of momentum change? Two cars, one a compact wi

Question

Which car has a greater magnitude of momentum change? Two cars, one a compact with mass 1400kg and the other a large gas-guzzler with mass 2600kg , collide head-on at typical freeway speeds. with mass 1400kg with mass 2600kg equal Which car has a greater velocity change? with mass 1400kg with mass 2600kg equal If the larger car changes its velocity by deltav, calculate the change in the velocity of the small car in terms of deltav. Which car's occupants would you expect to sustain greater injuries? with mass 1400kg with mass 2600kg equal

Explanation / Answer

a) Since momentum is conserved, they have the same momentum change.

b) The less mass car has the greater velocity change.

c) Magnitudes and dimensions are missing from this question. But
m?v = M?V
so
?v_small = ?v * (M/m)

M = 2600

m = 1400

?v_small =?v * 22600/1400 =?v*13/7

d)no-one will sustain any injuries unless they have seat-belt induced injuries caused by the deceleration to reach 0 mph before they collide

so equal

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