Forces

Question 1

Identify forces and categorise them as contact/non-contact

Answer 1

Contact =

Friction

Upthrust
(floating)

Tension

Air Resistance

Reaction

Thrust

Non-Contact =

Weight

Magnetism

Static Electricity

Question 2

Distinguish between the terms mass and weight

Answer 2

Mass →
- the quantity of atoms in an object (g)
-fixed value not affected by position

Weight →
-the force pulling objects together (N)
-value depends on the distance between objects

Question 3

Recall the equation that links mass, weight, and gravity and apply it to simple calculations of each

Answer 3

Weight = Mass * Gravity

(N) = (kg) * (N/kg)

Question 4

Describe how the forces present on objects in liquids contribute to floating/sinking

Answer 4

If the upthrust = weight on an object then the object will float but if there is more weight then the object will sink.

Question 5

Describe how temperature affects the upthrust in liquids

Answer 5

If the temperature of the liquid is increased, the upthrust will decrease and vice versa.