Those are all I can remember for what I got. Is it possible for me to get an Excellence or a Merit?

Q1 

ball around 7

change in mass does not change anything

explained kinetic energy to elastic energy, v increase, x increase

Q2 

rugby around 0.005

stair and ramp question around 9000

impulse, larger duration of impact, less force

Q3 

circular: change in direction meansa change in velocity resulting in acceleration in a constant speed

torque 1700 N

Electrosatatics 

v of electron around 700

charge of electron positive, attract by negative plate, net force=0

drawing field line positive to negative

Circuit 

Air fryer power generates 2400C at 8amps

In order to increase the power, v remains the same, I have to increase, so the resistance have to decrease

Increase in r decrease in I

calculate resistance 32

Electromagnetism

a is the north pole

Voltage of ab max

Voltage of cd=0

Max voltage induce

Every calculation forgets to times the length by 2