Forces (Paper 2)

Question 1

Define vector quantity

Answer 1

• A quantity that has both direction and magnitude

Question 2

Give 5 examples of vector quantities

Answer 2

• Force
• Velocity
• Displacement
• Acceleration
• Momentum

Question 3

Define scalar quantity

Answer 3

• A quantity that only has magnitude and no direction

Question 4

Give 5 examples of scalar quantities

Answer 4

• Speed
• Distance
• Mass
• Temperature
• Time

Question 5

How are vectors traditionally represented

Answer 5

• As an arrow, with size of the arrow showing magnitude

Question 6

What are the two types of force

Answer 6

• Contact
• Non contact

Question 7

Define contact force

Answer 7

• When two objects have to be touching for a force to act

Question 8

Define non contact force

Answer 8

• When two object do not need to be touching for a force to act

Question 9

Give 4 examples of contact forces

Answer 9

• Friction
• Air resistance
• Tension in ropes
• Normal contact force

Question 10

Give 3 examples of non contact forces

Answer 10

• Magnetic force
• Gravitational force
• Electrostatic force

Question 11

Define gravitational force

Answer 11

• Force of attraction between masses

Question 12

Define weight

Answer 12

• The force acting on an object due to gravity

Question 13

What causes weight

Answer 13

• The gravitational field

Question 14

What factors affect gravitational field strength

Answer 14

• Proximity to mass causing the field
• Size of the mass causing the gravitational field