Question

calculate the impulse required to stop a 15000kg car travelling at 90 km/h​

Answer 1

$\huge \underline \green{\sf{ Answer :- }}$

• Impulse = ∆p I.e. change in momentum
• So amount of impulse required = final momentum
• 90km/h = 25m/sI
• = p(f)-p(i) =0-25*1500
• = -37500

Answer 2

Explanation:

Impluse = Change in momentum

initial momentum= mv

= 15000*90*5/18

=375000

final momentum =0

so impulse = -375000