3.1.2.3.4.5 Basics

Question 1

What is speed and distance?

Answer 1

• Speed is the magnitude of the velocity vector.
• Distance is the magnitude of displacement vector

Question 2

How do you calculate average speed ?

Answer 2

for average velocity would be ∆displacement

Question 3

How do you calculate instantaneous speed?

Answer 3

Gradient of the tangent at a point on a speed time graph

for velocity would be a displacement (s) time graph

Question 4

What is displacement?

Answer 4

The shortest distance between two points

Question 5

What is velocity ?

Answer 5

Rate of change of displacement

Question 6

what is acceleration?

Answer 6

the rate of chnage of velocity

chnage in speed or direction

Question 7

what is the difference between uniform and non uniform acceleration?

Answer 7

• uniform: speed changes at a constant rate while travelling in a straight line (suvat)
• non- uniform: direction chnages or speed changes at a varying rate

non uniform can only be calculated using tangnet of velocity time graph

Question 8

a ball is thrown into the air and falling back down
* draw a displacement time graph
* draw a distance time graph for the ball

Answer 8

Question 9

What are the 5 SUVAT equations?

Answer 9

Question 10

what is a mnemoic for remebering the 7 SI base units?

Answer 10

1. Meter (length)
2. Kilogram (mass)
3. Second (time)
4. Ampere (current)
5. Mol (amount)
6. Kelvin (temperature)
7. Candela (luminosity)

my kite soars amongst my kite competition

Question 11

what do the prefixes peta (P), tera (T) , giga(G) pico (p)and femto (f) mean?

Answer 11

• P (passionate) - Peta (10^15)
• T (Tigers) - Tera (10^12)
• G (Growl) - Giga (10^9)
• p (pretty) - Pico (10^-12)
• f (Fiercely) - Femto (10^-15)

passionate tigers growl pretty fiercley

Question 12

what are the general scalar vector rules with units?

Answer 12

anything multipled/ divided with a vector quantity becomes vector