FA - Forces

Question 1

What does force =

Answer 1

Mass x acceleration

Question 2

What is newtons measure in?

Answer 2

1N = 1kg x 1ms2

Question 3

Types of forces

Answer 3

Tensile - pulling
Comprehensive - acting on internal structure
Contact - friction etc
Non contact - electromagnetism

Question 4

What are :
Colinear forces
Resultant forces
Net forces
Concurrent forces

Answer 4

-same line of action or opposition direction
- vector addition of 2 or more forces
- vector additions of all the external forces acting on an object
- forces acting through the same point but not in the same line - resultant forces depends on magnitude and angle e.g. rugby tackle

Question 5

Name newtons Laws

Answer 5

1st - law of inertia - resistance of a body to change in its motion
2nd - law of acceleration - external forces cause acceleration
3rd - law of action reaction - equal yet opposite

Question 6

How to work out momentum

Answer 6

Mass x velocity