Physics P8 Forces

Question 1

Scalar

Answer 1

Physical quantities that have size/magnitude but no direction.

Question 2

Magnitude

Answer 2

The size of a quantity.

Question 3

Vectors

Answer 3

Physical quantities that have size/magnitude and direction.

Question 4

Displacement

Answer 4

Displacement is a vector quantity that refers to “how far out of place an object is”; it is the objects overall change in position.

Question 5

Scalar or vector

Speed

Answer 5

Speed is a scalar quantity

Question 6

Scalar or vector

Velocity

Answer 6

Velocity is a vector quantity

Question 7

Newtons 3rd law

Answer 7

When 2 objects interact with each other they exert equal and opposite forces on each other.

Question 8

Newtons second law

Answer 8

In order to make an object move from rest, the forces must be unequal.

Question 9

Friction

Answer 9

Friction is the force exerted by a surface against an object when it moves across it

Question 10

Resultant force

Answer 10

A resultant force is a force that is produced in a certain direction due to a combination of forces

Question 11

Equation for moments

Answer 11

Moment(Nm) = Force(N) X Distance(m)