Question

A 400 g soccer ball lying on ground is kicked and flies off at 25 m/s. If the duration of the impact was 0.010 s, what was the average force on the ball?

Answer 1

average force = Change in momentum / time of impact

Answer 2

average force= 25 / 0.010

is this correct?

Answer 3

you're missing the mass in the equation, momentum=mass*velocity

Answer 4

average force = (25)(400) / 0.010 = 1000000

Answer 5

is it correct?

Answer 6

think properly danielle.. that is still not right.. what did you miss? (check units)

Answer 7

do i need to convert 400 g to kg?

Answer 8

That is S.I units right?

Answer 9

yes.

Answer 10

so then you have to :)!

Answer 11

ok. thanks!

Answer 12

no problem :)