Answer:
a
When peter held the book for one minute the rate at which motor unites are fired increase steeply but as the duration increases the increese in the rate at which it is being fired becomes linear so the number of activated motors stay the same but are being activated at a more rapidly
b
The same motors are activated whilest he is hold the book for 2 minutes this is because for peter to hold the book in one fixed position one specific motor units need to be activated
Note changing the motor unites would change the positon of the hand
Explanation:
Kinetic energy because there is motion (PE converting to KE). Potential energy is the amount of stored energy.
Like a seesaw, it shows that the forces aren’t equal because if it was the seesaw would stay put
no cause kids will think its Neglect and names will hert the kids and think they are not wanted
