Topic 9 (mechanics)

Question 1

average velocity

Answer 1

resultant displacement divided by total time

Question 2

average speed

Answer 2

total distance divided by total time

Question 3

gradient of displacement time graph

Answer 3

velocity

Question 4

Velocity time graphs

Answer 4

Velocity = y-axis 
Time = x-axis 

Initial velocity = u
Final velocity = v

Question 5

Gradient of velocity time graph

Answer 5

Acceleration

Rate of change of velocity

Question 6

Area beneath velocity time graph

Answer 6

Displacement

Question 7

kinematics

Answer 7

study of motion

Question 8

suvat

Answer 8

displacement 
initial velocity 
final velocity 
acceleration 
time

Question 9

final velocity formulae x2

Answer 9

v = u +at

v(squared) = u(squared) + 2as

Question 10

distance formulae x3

Answer 10

s = 1/2 (u+v)t

s=ut + 1/2 at(squared)

s=vt -1/2 at (tsqaured)

Question 11

Gravity

Answer 11

force of gravity = objects accelerate towards earth
ignore air resistance = gravity constant (doesnt depend on mass of object)
on earth = 9.8m/s squared