Post a New Question

physics

posted by .

A 109 kg fullback runs at the line of scrimmage.
(a) Find the constant force that must be exerted on him to bring him to rest in a distance of 1.1 m in a time interval of 0.22 s.
(b) How fast was he running initially?

  • physics -

    Average V during deceleration = 1.1/0.22 = 5 m/s
    Initial V = Vo = 2*Vav = 10 m/s
    Deceleration rate = a = Vo/0.22s
    = 45.5 m/s^2
    Force = m*a

Answer This Question

First Name
School Subject
Your Answer

Related Questions

More Related Questions

Post a New Question