[SEC 3] CHAPTER 3 - Forces

Question 1

Define mass of a body

Answer 1

Mass of a body is the measure of the amount of matter in it

Question 2

Define inertia of a body (1)

Answer 2

Inertia of a body is a measure of the reluctance of the object

Question 3

Define weight

Answer 3

Weight is the gravitational force acting on an object that has mass

Question 4

Define gravitational field

Answer 4

Gravitational field is a region in which a mass experiences a force due to gravitational attraction

Question 5

Define gravitational field strength at a point

Answer 5

Gravitational force per unit mass placed at a point

Question 6

What is the formula for gravitational field strength

Answer 6

g = W/m

W - weight of the object
m - mass of the object

Question 7

Define density

Answer 7

Density is a substances mass per unit volume

Question 8

What is density formula

Answer 8

density = mass/volume

Question 9

Define inertia of a body (2)

Answer 9

to change either its state of rest or if it is in motion,

Question 10

Define inertia of a body (3)

Answer 10

change its direction of motion due to its mass

Question 11

Define inertia of a body

Answer 11

Inertia of a body is a measure of the reluctance for the object to change either its state of rest of if it is in motion, change its direction of motion due to its mass