Question

A football of mass 0.4kg, initially at rest is kicked by a force of magnitude 1000N for 10ms. the velocity of the ball after the kick expressed as an integer in m/s is​

Answer 1

Given : A football of mass 0.4kg, initially at rest is kicked by a force of magnitude 1000N for 10s.

To Find : the velocity of the ball after the kick

Solution:

F = 1000N

m = 0.4 kg

F = ma

=> 1000N = 0.4 (a)

=> a = 2500 m/s²

initially at rest

u = 0

a =  2500 m/s²

t = 10 sec

V = u + at

=> V = 0  + 2500(10)

=> V = 25000 m/s

velocity of the ball after the kick expressed as an integer in m/s is = 25000

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Answer 2

$\mathfrak\green{☞Solution}$

$\mathtt\blue{F = 1000 \: N}$

$\mathtt\blue{M = 0.4 \: kg}$

$\mathtt\blue{F = MA}$

$\mathtt\blue{=>1000 \: N = 0.4 \: CA}$

$\mathtt\blue{=>A = 2500 M/S²}$

$\mathtt\blue{T = 10 sec}$

$\mathtt\blue{V = U + AT}$

$\mathtt\blue{=> V = 0 + 2500(10)}$

$\mathtt\blue{=> V = 25000 \: M/S}$

$\mathtt\red{Velocity \: of \: the \: ball \: after \: the }$

$\mathtt\red{ kick \: expressed \: as \: an \: integer \: }$

$\mathtt\red{ in \: M/S = }\mathtt\green{25000}$