P10

Question 1

What is Newton’s first law

Answer 1

If a resultant on a stationary object is 0, the object will remain station.

With no resolution the object will move with the smart velocity.

Question 2

What’s Newton’s second law

Answer 2

Acceleration of object proportional to resultant force and if inversely proportional to the mass of an object

Question 3

What’s the equation for force

Answer 3

Force(N) = mass(Kg) x acceleration(m/s(2))

Question 4

What is inertia

Answer 4

Objects will stay stationary or the small e motion unless there’s a resultant force acting on it,

Inertia mass measures how difficult it is to change velocity of an object; it’s the tattoo of the force needed to accelerate an object over acceleration procedure.

Question 5

What is breaking

Answer 5

During breaking the brake presses against the wheel force of friction acts against them. The kinetic energy of the car converts to the thermal energy in the brakes so the temperature increases. The car then slows down as kinetic energy decreases.

Question 6

What kind of force is gravity

Answer 6

Non-contact force that acts on everything

Question 7

How to work out weight

Answer 7

Weight=mass x gravitational field strength

Question 8

How are weight and an mass connected

Answer 8

Weight if an object is directly proportional to mass of an object

Question 9

What does gravitational field strength depend on

Answer 9

It depends on where you are

Question 10

What is terminal velocity

Answer 10

Terminal velocity is an objects eventual velocity when it’s falling. Weight is ideally a frictional force of an object. At terminal velocity resultant force is 0.

Question 11

What does all moving forces have

Answer 11

They all have momentum

Question 12

How to work out momentum

Answer 12

Momentum= mass x velocity

Question 13

What is conservation of momentum

Answer 13

In a closed system it’s the total momentum before and after an event, it is equal

Question 14

A greater speed results in ….

Answer 14

…A greater breaking force

Question 15

How to work out force

Answer 15

Force= mass x acceleration

Question 16

What is stopping distance effected by

Answer 16

Thinking distance

High speeds

Weather

Question 17

What are stretching forces

Answer 17

They are equal in magnitude and opposite in direction so they’re balanced

Question 18

What’s the rule with elastic materials

Answer 18

It will always return to its original length if no force is applied it’s called elastic deformation

So an elastic material that stretches and doesn’t go back to their original shape is called elastic deformation.

Question 19

How to work out force in terms of extension

Answer 19

Force(N)=springs constant(N/M) x extension(M)/ compression(M)

Question 20

What is work done equal to

Answer 20

It’s equal to elastic potential but not in elastic ally deformed