The change in momentum, Δp, of the body is 23520 Kgm/s
Momentum, p = m×v
Change in momentum is equal to the final momentum minus the intiala momentum
Change in momentum = mv - mu
Mass of car = weight/g
where g = 10 m/s^2
Mass of car = 15680/10
Mass of car = 1568 Kg
Change in momentum = 1568 Kg × 20 - 1568 Kg × 5
Change in momentum, Δp = 23520 Kgm/s
Therefore, the change in momentum, Δp, of the body is 23520 Kgm/s
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