Question

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Answer 1

Answer:

Mass m= 1kg

initial velocity u=2m/s

distance covered s=0.01m

so applying equation of motion

V²=U²+2as

here v=0

a=4/(2*0.01)

=200m/s²

so Force F=ma

m is mass and a is acceleration

F=1*200=200N

V=u+at

So time of impact t is

0=2+200t

t=2/200=0.01s or 1 milisecond