hannabanana07 hannabanana07
  • 22-01-2016
  • Physics
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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

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Saltasaurus
Saltasaurus Saltasaurus
  • 23-01-2016
F = m*a
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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