Equations

Question 1

Acceleration

Answer 1

Acceleration = change in velocity/ time taken
A= ∆v/t

Question 2

Velocity

Answer 2

Velocity = displacement/time

V=s/t

Question 3

Force

Answer 3

Force = mass x acceleration

F=ma

Question 4

Weight

Answer 4

Weight =mass x gravitational field strength

W=mg

Question 5

Momentum

Answer 5

Momentum = mass x velocity

P=mv

Question 6

Speed

Answer 6

Speed = distance/time

S=s/t

Question 7

Suvat (1)

Answer 7

Final velocity= initial velocity + acceleration x time

V = u+at

Question 8

Impact force

Answer 8

Force= change in momentum /time taken
F= ∆p/t

Question 9

Suvat (2)

Answer 9

Final speed ²= initial speed ² + 2(acceleration x distance)

V ²=u ²+2as

Question 10

Gradient

Answer 10

Rise/run

Question 11

What is terminal velocity?

Answer 11

the object moves at a steady speed in a constant direction because the resultant force acting on it is zero

Question 12

What is a vector quantity?

Answer 12

A vector quantity is a quantity that has both direction and magnitude

Question 13

What is a scalar quantity?

Answer 13

A quantity that had magnitude but no given direction

Question 14

Impact force

Answer 14

Force=change in momentum/time

F= ∆p/t

Question 15

Hooke’s Law equation

Answer 15

Spring force= spring constant x spring stretch

F=k ∆x