Jenny was applying her makeup when she drove into the student parking lot last Friday morning. Unaware that Cheryl was stopped in her lane ahead, Jenny rear-ended Cheryl's car. Jenny's 1300-kg car was moving at 11 m/s and stopped in 0.14 seconds. Determine the change in momentum for Jenny's car. A. 0 kg*m/s

B. 182 kg*m/s

C. 14300 kg*m/s

D. 118.18 kg*m/s

  C.  14300 kg*m/s

Explanation:

The momentum of Jenny's car is the product of its mass and velocity:

  mv = (1300 kg)(11 m/s) = 14300 kg·m/s

After the collision, the velocity and momentum are 0. So, the change in momentum is (a decrease of) ...

  14300 kg·m/s

since you're a real machine, your ama is always less than your ima, because you can never totally eliminate friction.

the body's situation won't change the forces are equal opposit and on the same body