Booklet 1A - Dynamics (Equations)

Question 1

d = vt

(Define symbols and units)

Answer 1

d - total distance (m) or (km)

v - average speed (ms^-1) or (kmh^-1)

t - total time (s) or (h)

Question 2

s = vt

(Define symbols and units)

Answer 2

s - resultant displacement (m) or (km)

v - average velocity (ms^-1) or (kmh^-1)

t - total time (s) or (h)

Question 3

v = u + at

(Define symbols and units)

Answer 3

v - final velocity (ms^-1)

u - initial velocity (ms^-1)

a - acceleration (ms^-2)

t - time (s)

Question 4

s = ut + ½at²

(Define symbols and units)

Answer 4

s - displacement (m)

u - initial velocity (ms^-1)

t - time (s)

a - acceleration (ms^-2)

Question 5

v² = u² + 2as

(Define symbols and units)

Answer 5

v - final velocity (ms^-1)

u - initial velocity (ms^-1)

a - acceleration (ms^-2)

s - displacement (m)

Question 6

s = ½(u + v)t

(Define symbols and units)

Answer 6

s - displacement (m)

u - initial velocity (ms^-1)

v - final velocity (ms^-1)

t - time (s)

Question 7

W = mg

(Define symbols and units)

Answer 7

W - Weight (N)

m - mass (kg)

g - gravitational field strength (Nkg^-1)

Question 8

F = ma

(Define symbols and units)

Answer 8

F - Force (N)

m - mass (kg)

a - acceleration (ms^-2)

Question 9

E_w = Fd

(Define symbols and units)

Answer 9

E_w - Work Done (J)

F - Force (N)

d - distance (m)

Question 10

E_p = mgh

(Define symbols and units)

Answer 10

E_p - Gravitational Potential Energy (J)

m - mass (kg)

g - gravitational field strength (Nkg^-1)

h - height (m)

Question 11

E_k = ½mv²

(Define symbols and units)

Answer 11

E_k - Kinetic Energy (J)

m - mass (kg)

v - speed (ms^-1)

Question 12

P = E/t

(Define symbols and units)

Answer 12

P - Power (W)

E - Energy/Work Done (J)

t - time (s)

Question 13

p = mv

(Define symbols and units)

Answer 13

p - Momentum (kgms^-1)

m - mass (kg)

v - velocity (ms^-1)

Question 14

Ft = mv - mu

(Define symbols and units)

Answer 14

F - (Average) Force (N)

t - time (s)

m - mass (kg)

v - final velocity (ms^-1)

u - initial velocity (ms^-1)

Question 15

What does the unit prefix G mean? (e.g GHz)

Answer 15

G (Giga) means x10⁹

Question 16

What does the unit prefix M mean? (e.g MHz)

Answer 16

M (Mega) means x10⁶

Question 17

What does the unit prefix k mean? (e.g kHz)

Answer 17

k (kilo) means x10³

Question 18

What does the unit prefix m mean? (e.g ms)

Answer 18

m (milli) means x10^-3

Question 19

What does the unit prefix µ mean? (e.g µs)

Answer 19

µ (micro) means x10^-6

Question 20

What does the unit prefix n mean? (e.g nm)

Answer 20

n (nano) means x10^-9