Heinemann Physics Unit 2a And 2b Worked Solutions
Heinemann Physics Content and Contexts Units 2A and 2B
Worked solutions
Contents Unit 2A
Aerospace physics Medical physics: atoms in action 3 5
Chapter 1 Measurement and data
1.1 Measurement and units 1.2 Data 1.3 Graphical analysis of data Chapter review 7 7 8 10
Chapter 2 Describing motion
2.1 Describing motion in a straight line 2.2 Speed, velocity and acceleration 2.3 Graphing motion: position, velocity and acceleration 2.4 Equations of motion Chapter review 14 15 17 20 23
Chapter 3 Forces and their effects
3.1 Force as a vector 3.2 Vector techniques 3.3 Newton’s first law of motion 3.4 Newton’s second law of motion 3.5 Newton’s third law of motion Chapter review 27 28 34 35 37 40
Chapter 4 Energy and momentum
4.1 The relationship between momentum and force 4.2 Conservation of momentum 4.3 Work 4.4 Mechanical energy 4.5 Energy transformation and power 4.6 Elastic and inelastic collisions Chapter review 45 46 47 48 50 51 52
Chapter 5 Nuclear energy
5.1 Atoms, isotopes and radioisotopes 5.2 Alpha, beta and gamma radiation 5.3 Properties of alpha, beta and gamma radiation 5.4 Half-life and activity of radioisotopes 5.5 …show more content…
b In moving from C to B, the ant travels a displacement of: 40 − 50 = −10 cm and a distance of 10 cm. c In moving from C to D, the ant travels a displacement of: 70 − 50 = +20 cm and a distance of 20 cm. d In moving from C to E and then to D, the ant travels a displacement of (70 − 50= +20 cm and a distance of: 50 + 30 = 80 cm a The distance travelled is: 50 +30 = 80 km b The displacement = final position – initial position = 20 km north. a The displacement from ground floor to basement is 10 m down. b The displacement from basement to the top floor is 60 m up. c Total distance travelled = 10 m +10 m + 50 m= 70 m d The displacement is the change in position, which is 50 m up. Displacement is the only vector listed here. a
Worked solutions
Contents Unit 2A
Aerospace physics Medical physics: atoms in action 3 5
Chapter 1 Measurement and data
1.1 Measurement and units 1.2 Data 1.3 Graphical analysis of data Chapter review 7 7 8 10
Chapter 2 Describing motion
2.1 Describing motion in a straight line 2.2 Speed, velocity and acceleration 2.3 Graphing motion: position, velocity and acceleration 2.4 Equations of motion Chapter review 14 15 17 20 23
Chapter 3 Forces and their effects
3.1 Force as a vector 3.2 Vector techniques 3.3 Newton’s first law of motion 3.4 Newton’s second law of motion 3.5 Newton’s third law of motion Chapter review 27 28 34 35 37 40
Chapter 4 Energy and momentum
4.1 The relationship between momentum and force 4.2 Conservation of momentum 4.3 Work 4.4 Mechanical energy 4.5 Energy transformation and power 4.6 Elastic and inelastic collisions Chapter review 45 46 47 48 50 51 52
Chapter 5 Nuclear energy
5.1 Atoms, isotopes and radioisotopes 5.2 Alpha, beta and gamma radiation 5.3 Properties of alpha, beta and gamma radiation 5.4 Half-life and activity of radioisotopes 5.5 …show more content…
b In moving from C to B, the ant travels a displacement of: 40 − 50 = −10 cm and a distance of 10 cm. c In moving from C to D, the ant travels a displacement of: 70 − 50 = +20 cm and a distance of 20 cm. d In moving from C to E and then to D, the ant travels a displacement of (70 − 50= +20 cm and a distance of: 50 + 30 = 80 cm a The distance travelled is: 50 +30 = 80 km b The displacement = final position – initial position = 20 km north. a The displacement from ground floor to basement is 10 m down. b The displacement from basement to the top floor is 60 m up. c Total distance travelled = 10 m +10 m + 50 m= 70 m d The displacement is the change in position, which is 50 m up. Displacement is the only vector listed here. a