Vectors

Question 1

Examples of vector quantities

Answer 1

• Displacement
• Velocity
• Force
• Weight
• Acceleration

Question 2

Examples of scalar quantities

Answer 2

• Distance
• Speed
• Mass
• Work
• Time
• Energy
• Power

Question 3

Finding resultant by calculation

Answer 3

SOHCAHTOA
Sin θ = opposite/hypotenuse
Cos θ = adjacent/hypotenuse
Tan θ = opposite/adjacent

Question 4

Average speed formula

Answer 4

Distance/time

Question 5

Average velocity formula

Answer 5

Displacement/time

Question 6

Acceleration formula and unit

Answer 6

Change in velocity/change in time = Δv/Δt
Unit = ms^-2

Question 7

An object will accelerate when

Answer 7

It experiences a resultant force

Question 8

Velocity and displacement

Answer 8

When velocity increases (or decreases) each second, the displacement each second will change

Question 9

If force resultant and velocity are in the same direction

Answer 9

Velocity of object increases & acceleration is positive (same direction as velocity)

Question 10

If force resultant and velocity are in opposite directions

Answer 10

Velocity of the object decreases & acceleration is negative (opposite direction to velocity)