2. A snowmobile has a mass of 250 kg. A constant force is exerted on it for 60 s. The snowmobile's initial velocity is 6 m/s and it
accelerates to 28 m/s:
(a) What is its change in momentum?
(b) What is the magnitude of the force exerted on it?

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.

step by step solution :

step   1   :

1.1     4 = 22

(4)3 = (22)3 = 26

equation at the end of step   1   :

  ((23) • 26)2

step   2   :

equation at the end of step   2   :

  (23 • 26)2

step   3   :

final result :

  218

ya