3. mr. hogan in his 3000 kg truck is driving down
highway 175 toward crandall at 80 miles per hour
(36 m/s). he sees a police car up ahead and slows
down to 65 miles per hour (29 m/s). determine the
magnitude of the impulse required to do this?
a. 46.2 kg. m/s
b. 429 kg. m/s
c. 2417 kg. m/s
d. 3724 kg. m/s
e. 21,000 kg. m/
seo tool s

Correct Option E

Explanation:

Impulse and Momentum

The Impulse is defined as the change of momentum of an object in a certain interval. The formula is:

Where pf and po are the final and initial momentums respectively. Knowing that for m= mass of the object and v=velocity (or speed in the scalar form)

Thus

Mr. Hogan's 3000 kg truck is initially at 36 m/s and later slows down to 29 m/s. We compute the impulse as follows

We are asked for the magnitude, thus

Correct Option E

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