Question

how do you work these out
What is the mass of a cannonball if a force of 2,500 N gives the cannonball an acceleration of 200 m/s2?

A.
12.5 kg

B.
15.0 kg

C.
20 kg

D.
25 kg

Answer 1

can anyone help me out?

Answer 2

Newton's second law says
\[\sum F = m \times a\]
here we have only one force F=2500 N
and a= 200 m/s2

can you calculate m ?

Answer 3

um

Answer 4

i don't know how but what i think it might be 15

Answer 5

because what i did is 2 times 15 = to 25
even though it it 2500

Answer 6

we have F = m*a
thus m = F/a

replace f by2500 and a by 200
what do you get ?

Answer 7

2500 =m*200?
thus m=2500/200=15?

Answer 8

it's not 15, recalculate it

Answer 9

ok

Answer 10

12.5

Answer 11

tell me what you get to check it for you

Answer 12

yeah now it's correct