forces - Newton’s Second Law of Motion

Question 1

what is newton’s second law of motion?

Answer 1

the acceleration of an object is proportional to the resultant force acting on the object and inversely proportional to the mass of the object

Question 2

newton second law
greater force =

Answer 2

greater acceleration

Question 3

In newton’s second law, if the mass is larger =

Answer 3

the acceleration will be smaller

Question 4

force equation

Answer 4

force (N) = mass (kg) x acceleration (m/s squared)

Question 5

how fast do cars travel on main roads?
how fast do they travel on the motorway?
what do cars accelerate by from main road to motorway? family car?

Answer 5

a) about 13 m/s
b) around 30 m/s
c) typical acceleration of around 2 m/s squared. family car would require a force around 2000N

Question 6

what’s inertia?

Answer 6

an object will stay stationary or continue moving at the same speed and direction, unless a resultant force is applied. objects will stay still or keep the same motion unless you apply a resultant force acting

Question 7

what is the inertial mass?

Answer 7

a measure or how difficult it is to change the velocity of an object. it is defined as the ratio of the force needed to accelerate an object over the acceleration produced

Question 8

what will an object with a larger inertial mass require?

Answer 8

a larger force to produce a given acceleration than an object with a smaller inertial mass