Equations: Forces (P8, P9 & P10)

Question 1

Write down the equation for WEIGHT

Answer 1

• Weight = mass x gravitational field strength
  W = m g

Question 2

Write the equation for WORK DONE

Answer 2

• work done = force x distance (moved along the line of action of the force)
  W = F s

Question 3

Write the equation for FORCE (spring one)

Answer 3

• Force = Spring constant x extension
  F = k e

Question 4

What is the equation for DISTANCE TRAVELLED?

Answer 4

• distance travelled = speed x time
  s = v t

Question 5

What is the equation for acceleration?

Answer 5

• acceleration = change in velocity / time taken
  v-u / t

Question 6

Equation for RESULTANT FORCE

Answer 6

• resultant force = mass x acceleration
  F = m a

Question 7

What is the equation for MOMENTUM?

Answer 7

• momentum = mass x velocity
  p = m v