John coasts on his skateboard at a speed of 5 m/s. He uses his foot to slow himself down to 3 m/s. If he has a mass of 99 kg, what impulse does he
apply?
A. 297 kg•m/s
B. 495 kg•m/s
C. 198 kg•m/s
D. 505 kg•m/s

A. 297 kg•m/s

MOMENTUM=  MASS X VELOCITY

M = (99kg) (3m/s) = 297 kg•m/s

another example of kinetic energy would be,

kinetic energy   >     moving energy

answer   >   letter choice (c),   a hammer falling off a table.

hope that !                                         : )

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer