topic 9 - forces and their effects

Question 1

give 3 examples of non contact forces and how they work

Answer 1

1. gravitational
2. magnetic
3. electrostatic

as the objects get further apart e.g. magnets the attraction between them reduces

Question 2

name 3 examples of both vector and scalar quantities

Answer 2

scalar - quantities with only magnitude no direction
1. distance
2. mass
3. time

vector -
1. velocity
2. displacement
3. acceleration

Question 3

when can forces cause rotation

Answer 3

• magnetic field force can cause a motor to turn

Question 4

moment of a force =

Answer 4

force (N) x distance

Question 4

what is a moment force

Answer 4

a moment force is where an object is placed on a pivot (like a seesaw) and it is where the object can turn or rotate