Rank the following situations in order of the magnitude of the impulse of the ne

Question

Rank the following situations in order of the magnitude of the impulse of the net force, from largest value to smallest value.

A 400-kg object moving south at 20 m/s speeds up for 20 s, after which it is moving south at 25 m/s.

A 300-N net force directed toward the north acts on a 200-kg object for 15 s.

A 300-N net force directed toward the north acts on a 600-kg object for 15 s.

A 200-kg object initially moving west at 20 m/s comes to rest in 30 s.

A 200-kg object initially moving west at 20 m/s comes to rest in 10 s.

A 400-kg object moving south at 10 m/s speeds up for 20 s, after which it is moving south at 15 m/s.

in Universty Ptrysicsi spring 2017 2425 zaretavomsttamuretse CER- Test Your Understanding B1 and Impuse Test Your Understanding 8.1: Momentum and Impulse Ise ofthe net farce, hom largest valse to smallest Rank the following situations

Explanation / Answer

Let me name these options.

(A) A 400-kg object moving south at 20 m/s speeds up for 20 s, after which it is moving south at 25 m/s.

= 2000 N-s

(B) A 300-N net force directed toward the north acts on a 200-kg object for 15 s.

= 4500 N-s

(C) A 300-N net force directed toward the north acts on a 600-kg object for 15 s.

= 4500 N-s

(D) A 200-kg object initially moving west at 20 m/s comes to rest in 30 s.

= 4000 N-s

(E) A 200-kg object initially moving west at 20 m/s comes to rest in 10 s.

= 4000 N-s

(F) A 400-kg object moving south at 10 m/s speeds up for 20 s, after which it is moving south at 15 m/s.

= 2000 N-s

So

(B) = (C) > (D) = (E) > (A) = (F)

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