Thursday, Dec.20

On Thursday the 20th it was an easy going class, we haven't done as much as we usually do.
Ms. K just corrected our homework and that was it for the day. so am here to hook you up with the answers in case u missed them.

Sheet # 1 Falling and Air Resistance
1- (most) a) a= 10m/s²
2- (a,b) b) a= 6m/s²
3- (d,e) c) a= 0m/s²
4- (still downward) d) -2m/s²
5- (c,f) e) a= -10 m/s²
6- (c,f) f) a= 0 m/s²

Sheet # 2 Gravitational fields of force relative to earth

1. Jupiter, 26.10 N/kg
2. Pluto, 0.31 N/kg
3. 3.72 m/s², 3.72 N/kg
4.Venus or Uranus
5. Neptune
6. Mercury
7. m=55 Kg 550N
8. 92N
9. F_g=3321N
10. 26.10 m/s²

sheet # 3 Falling and Air Resistance

1. Air Resistance = Weight
2. Air Resistance/weight is less
3. 0 N
4. Air Resistance= 100N[up]
5. F_net increases, acceleration increases
6. Gains more speed in 1st second of fall gains more distance in 9th second
7. F_net is different for both tennis ball and sand tennis ball, has greater F_net air resistance has more effect on lighter tennis ball, so its acceleration is less