Higher, Faster, Stronger

Question 1

Scalar

Answer 1

Has only a magnitude

Question 2

Vector

Answer 2

Has a magnitude and a direction

Question 3

Uniform Acceleration

Answer 3

Acceleration is constant throughout, we can use SUVAT to work out

Question 4

SUVAT (no S)

Answer 4

v=u+at

Question 5

SUVAT (no U)

Answer 5

s=vt-1/2at^2

Question 6

SUVAT (no V)

Answer 6

s=ut+1/2at^2

Question 7

SUVAT (no A)

Answer 7

s=(u+v)/2*t

Question 8

SUVAT (no T)

Answer 8

v^2=u^2+2as

Question 9

Newton’s First Law

Answer 9

Every body continues in a state or rest or uniform motion (constant velocity) unless a resultant force acts on it

Question 10

Newton’s Second Law

Answer 10

F=ma

Question 11

Newton’s Third Law

Answer 11

If object A exerts a force on object B then object B will exert and equal and opposite force on object A (every action has an equal and opposite reaction)

Question 12

Displacement Time Graphs

Answer 12

Gradient is velocity

Question 13

Force Pairs

Answer 13

• forces acting on the same object
• equal in size (same magnitude)
• act in the same line of action
• opposite in direction
• of the same type (e.g. both electrostatic or gravitational)

Question 14

Equilibrium

Answer 14

the net force equals zero

Question 15

Elastic

Answer 15

Stretch when put under tension and return to original shape/size when load removed

Question 16

Strong

Answer 16

Require a large tension to break them

Question 17

Hooke’s Law on a graph

Answer 17

• must pass through the origin

- are linear with a constant gradient

Question 18

Hooke’s Law

Answer 18

Force is proportional to extension so there must be a constant ‘k’ which is stiffness

Question 19

Limit of proportionality

Answer 19

Where the graph showing Hooke’s Law starts to significantly deviate

Question 20

Kinetic Energy

Answer 20

energy an object has because of movement

Question 21

Potential Energy

Answer 21

energy a body has due to its position or arrangement (height - gravitational)

Question 22

Elastic energy from a graph

Answer 22

area under a force extension graph

Question 23

When is using SUVAT suitable?

Answer 23

only when the acceleration is constant

Question 24

What are the base units?

Answer 24

• Length [m]
• Mass [kg]
• Time [s]
• Current [A]
• Temperature [K]
• Amount [mol]

Question 25

Giga

Answer 25

G x10^9

Question 26

Mega

Answer 26

M x10^6

Question 27

Kilo

Answer 27

k x10^3

Question 28

Milli

Answer 28

m x10^-3

Question 29

Micro

Answer 29

μ x10^-6

Question 30

Nano

Answer 30

n x10^-9

Question 31

Pico

Answer 31

p x10^-12

Question 32

Gravity

Answer 32

9.81 m/s^2

Question 33

Non-uniform acceleration

Answer 33

unequal changes in equal intervals of time

Question 34

Conservation of momentum

Answer 34

total momentum before = total momentum after (as long as no external forces act on them)

Question 35

Elastic collision

Answer 35

• 2 objects collide and move apart in two directions
• momentum is conserved
• kinetic energy is conserved

Question 36

Inelastic collision

Answer 36

• 2 objects collide and stick together (same direction)

- kinetic energy is not conserved (some has been lost) this is most collisions

Question 37

Moment

Answer 37

total clockwise moment = total anticlockwise moment

Question 38

Types of Energy

Answer 38

• light
• thermal
• sound
• kinetic
• chemical potential
• elastic potential
• gravitational potential
• nuclear
• electrical

Question 39

Conservation of energy

Answer 39

Energy cannot be created or destroyed only transferred

Question 40

Waste energy

Answer 40

is generally given out as heat and light which dissipates to the surroundings

Question 41

What does the stiffness depend on?

Answer 41

• material thickness
• material length
• material itself

Question 42

Projectiles

Answer 42

objects that are thrown or launched into the air and are subject to gravity

Question 43

Projectile motion

Answer 43

curved path that an object follows when thrown/launched

Question 44

Work done

Answer 44

equals energy transferred