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hannabanana07 hannabanana07
  • 22-01-2016
  • Physics
Answered

Leroy who has a mass of 100kg, is skateboarding at 9.0 m/s when he smacks into a brick wall and comes to a dead stop at 2.0 s

show that his acceleration us 45 m/s2

Verified Answer :

Saltasaurus
Saltasaurus Saltasaurus
  • 22-01-2016

F = ma
a = v/t
a = 9.0 m/s / 2.0 s
a = 4.5 m/s^2
F = 100 kg 4.5 m/s^2
F = 450 N
Sig figs = 500 N?

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