15 POINTS ASAP:: 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. 198 kg. m/s
B. 495 kg•m/s
C. 505 kg•m/s
D. 297 kg. m/s

The astronauts on the space shuttle flights experienced an acceleration of 29 m/s2 (about 3 "g's") during lift-off. what upward force must the astronaut's seat apply to the astronaut in order to cause this acceleration? assume the astronaut's mass is 70 kg, and compute this force when the acceleration is near the earth's surface so their weight equals latex: mg m g .