Physics Paper 2 GCSE Flashcards Preview

Physics > Physics Paper 2 GCSE > Flashcards

Flashcards in Physics Paper 2 GCSE Deck (78)
Loading flashcards...
1

What does scalar quantities only have?

magnitude

2

What does vector quantities have?

magnitude and an associated direction

3

How is vector quantities represented?

arrow

4

What does the length of the vector quantities arrows show?

magnitude

5

What does the direction of the arrow representing vector quantities show?

direction of the vector quantity

6

What is a force?

a push or a pull that acts on an object due to the interaction with another object

7

What are the forces between objects?

contact forces - the objects are physically touching
non-contact forces - the objects are physically seperated

8

What is weight?

force acting on an object due to gravity

9

What does the weight of an object depend on?

gravitational field strength at the point where the object is

10

How do you calculate weight?

mass x gravitational field strength

11

What is the gravitational field strength of the earth?

10 n/kg

12

How do you calculate work done?

force x distance

13

What is one joule in newton-metre?

1 newton-metre

14

What does work done against the frictional forces acting on an object cause?

rise in the temperature of the object.

15

To change the shape of an object what must happen?

more than one force has to be applied – this is limited to stationary objects only

16

Whats elastic deformation?

elastic deformation is a change in shape of a material at low stress that is recoverable after the stress is removed.

17

Whats inelastic deformation?

a deformation occurring when a material is stressed beyond its elastic limit.

18

What is the extension of an elastic object like compared to the force applied?

The extension of an elastic object, such as a spring, is directly proportional to the force applied, provided that the limit of proportionality is not exceeded.

19

How do you calculate force?

spring constant x extension

20

What type of energy is stored in a spring?

elastic potential energy

21

How do you calculate elastic potential energy?

0.5 x spring constant x (extension)2

22

How do you calculate moment of a force?

force x distance

23

How can you calculate pressure?

force normal to a surface/area of that surface
height of the column x density of the liquid x gravitational field strength

24

A partially (or totally) submerged object experiences what?

a greater pressure on the bottom surface than on the top surface. This creates a resultant force upwards. This force is called the upthrust.

25

What does displacement include?

Displacement includes both the distance an object moves, measured in a straight line from the start point to the finish point and the direction of that straight line. Displacement is a vector quantity.

26

What is speed?

Speed does not involve direction. Speed is a scalar quantity

27

What is a typical value of someone walking?

1.5 m/s

28

What is a typical value of someone running?

3 m/s

29

What is a typical value of someone cycling?

6 m/s

30

What is the typical value for the speed of sound in air?

330 m/s