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A large toy car with a mass of 3 kg is initially moving with a velocity of 69 cm/s when it hits a pillow and bounces back with a velocity of -40cm/s.

What is the change in momentum of the toy car?

a: -.87 kg m/s

b: .87 kg m/s

C: 3.27 kg m/s

D: .000275 kg m/s

E: -.00027522 kg m/s

F: none of the above
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Change of Momentum = m* (final velocity - initial velocity)

change of momentum = 3 * ( -40 - 69)

= 3 * ( -109)

= 327 kg cm/s

= 3.27 kg m/s
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