Chapter 6 Answer Key: Mass, Weight and Newton’s Law
6.2 Newton’s Second Law
1. 7.2 kg
2. 12.5 m/s2
3. 0 N
4. – 610 N
5. 0.0010 N or 1.0 mN
6. 4.2 m/s2
7. 0.034 m/s2 or 3.4 cm/s2
8. 960 m/s2
6.4 Weight & Mass
1. (i) 150 N(ii) 30 m/s2
2. (i) 5.0 m/s2 (ii) 49 m/s2
3. (i) 538 N (ii) 541 N
4. 76 kg
5. 250 N
6. 730 N in both cases
7. 1.4 m/s2
8. 0.49 m/s2
9. 9960 N to 36 200 N
6.7 Newton’s Second Law & Accelerated Motion
1. 106 m 2. 625 N
3. 390 N
4. – 4630 N
5. 5.8 s
6. 37.5 m/s
7. 4.8 s
8. 815 m
6.7.1 Calculating the Mass of the Earth’s Atmosphere
1. 5.3 x 1018 kg