Calculate the final velocity right after a 118 kg rugby player who is initially running at...

Question

Question

Calculate the final velocity right after a 118 kg rugby player who is initially running at 7.45 m/s collides head-on with a p

science physics

Answer 1

Answer #1

Let the initial direction of motion is positive.

Impulse imparted by the force,

I = F. t

= (-17500 N) x (5.50 x 10^-2 s)

= -962.5 N.s

by impulse-momentum theorem

I = m (v_f - v_i)

-962.5 = 118 (v_f - 7.45)

v_f = -0.707 m/s

Answer 2

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