Chapter3

Question 1

Newtons 1st law

Answer 1

An object will remain at rest or in a state of uniform motion unless it is acted on a resultant force

Question 2

Newtons 2nd law

Answer 2

For a body of constant mass, it’s acceleration is directly proportional to the resultant force applied to it

Question 3

Inertia

Answer 3

A mass’s ability to resist any change in motion

Question 4

Newtons 3rd law

Answer 4

When two bodies interact the forces they exert on each other are equal in magnitude and opposite in direction

Question 5

Push and pull forces

Answer 5

Acceleration by pushing
Lifting
Force of a car.
Attractive forces

Question 6

Weight forces

Answer 6

Force of gravity acting

Any object in a gravitational field

Question 7

Friction forces

Answer 7

Two surfaces rub over one another
Pulling
Vehicles cornering/skidding
Sliding down a slope

Question 8

Drag

Answer 8

Moving through air or liquid, like friction

Flying,falling, parachuting, sailing, moving, swimming

Question 9

Upthrust

Answer 9

Object placed in a fluid experiences an upwards force, deeper the object greater the pressure, more pressure on the lower surface pushes it upwards

Question 10

Contact forces

Answer 10

Opposing force, normal(perpendicular)reaction, acts in right angle to surface

Question 11

Tension

Answer 11

Pull, stretches

Push, compress