forces and balance questions I got wrong

Question 1

what is the practical for spring

Answer 1

set up a clamp stand with a clamp
* hang the spring from the clamp
* use a second clamp and boss to fix a (half) metre rule alongside the spring * record the ruler reading that is level with the bottom of the spring
* hang a 1 N / a known weight from the bottom of the spring
* record the new position of the bottom of the spring
* calculate the extension of the spring
* measure the extension of the spring
* add further weights to the spring so the force increases 1 N at a time up to 5 N * for each new force record the position of the bottom of the spring and calculate
/ measure the extension

Risk Assessment
Hazard: Clamp (stand, boss and masses) might fall off desk
Risk: injury to feet
Precaution: Use clamp to fix apparatus to the bench or
Ensure that the slotted masses hang over the base/foot of the stand or
Ensure that the boss is screwed tightly into the stand and clamp or
Put (heavy) masses on the base/foot of the stand or Stand up so that you can move out of the way
Hazard: Spring could break / come loose Risk: damage eye
Precaution: Wear safety goggles

Question 2

write down equation that likes acceleration (a) mass (m0 and resultant force (F)

Answer 2

resultant force = mass x acceleration

Question 3

describe how acceleration investigation could be improved to remove random errors

Answer 3

repeat measurements/ investigation

Question 4

how to work put acceleration

Answer 4

acceleration = change in velocity over [divided by] time taken.

Question 5

momentum equation

Answer 5

momentum = mass x velocity

Question 6

what unit is acceleration measured in

Answer 6

m/s [squared]

Answer 7

in a closed system the total amount of mementos used in an even