Newton's 2nd Law

Question 1

what is the definition of a force

Answer 1

a push or a pull (measured in Newtons - N)

Question 2

what are the two affects of a force

Answer 2

1. change the motion of a body (change in speed/direction)

2. changes shape of body (squash/extend)

Question 3

what are the two types of forces

Answer 3

1. contact (sports)

2. Non Contact (field) e.g. gravity, magnetism

Question 4

what are the 4 fundamental forces in nature

Answer 4

1. weak nuclear force 2. electrogmagetic 3. gravity 4. strong nuclear force

Question 5

What is the definition of the second law

Answer 5

a force applied to a rigid object will cause it to accelerate,
the larger the force the greater the acceleration, the greater the mass the smaller the acceleration, the motion is in the same line of action as the force applied

Question 6

what is the formula for the 2nd law

Answer 6

f = m x a

Question 7

What is net force

Answer 7

the sum of the forces acting on an object and its effect

Question 8

what is a balanced force (3 points

Answer 8

when net force acting on object = 0
the object will not accelerate
it can stay at a constant speed or at rest

Question 9

what is a unbalanced force (3 points

Answer 9

when the net force acting on the object is not 0
the object will acclerate
within in a structure/building it will cause failure

Question 10

what is gravity

Answer 10

the attractive force that acts between masses (2 masses have attracting equal forces)

Question 11

g— the bigger the mass =

Answer 11

the bigger the force

Question 12

g— the closer the object are =

Answer 12

the bigger the force

Question 13

What is weight

Answer 13

the force acting on a mass placed in a gravitational field measured in newtons , w=mx g