P2.1 Formulas

Question 1

How many metres are there in a mile?

Answer 1

1609

Question 2

How do you calculate average speed

Answer 2

Average speed (m/s) = total distance (m)
                                       ——————————
                                          Total time (s)

Question 3

How do you calculate acceleration (if you know the change in velocity)

Answer 3

Acceleration (m/s2) = change in velocity (m/s)
—————————————
Time (s)

Question 4

How do you calculate acceleration if you know the final and initial velocity?

Answer 4

Acceleration (m/s2)=final velocity (m/s) -initial velocity (m/s)
————————————————————
Time (s)

Question 5

How do you calculate velocity ?

Answer 5

Velocity = change in displacement (m)
——————————————
Time (s)

Question 6

How do you calculate acceleration from a graph

Answer 6

Acceleration = change in velocity
—————————-
Change in Time

Question 7

What is the equation of motion?

Answer 7

(Final velocity)^2 - (initial velocity)^2 = 2✖️acceleration ✖️distance

Question 8

How do you calculate final velocity from the equation of motion

Answer 8

(Final velocity)^2 = (2✖️acceleration✖️distance) + (initial velocity)^2

Question 9

How do you calculate kinetic energy?

Answer 9

Kinetic energy (J) = 0.5 ✖️ mass (kg)✖️(speed)^2

Question 10

How do you calculate speed from kinetic energy

Answer 10

Speed = ✔️(kinetic energy)➗(0.5✖️mass)