Calculate the final speed of a 110-kg rugby player who is initially running at 8.00 m/s but collides head-on with a padded goalpost and experiences a backward force of 1.76×104 N for 5.50×10–2 s .

Step-by-step solution In this problem calculate the final speed of a rugby player who experience a backward force when collides with a goal post using the data find his final speed respectively: Step 1 of 5 Running speed of rugby player is, However, one collide head on padded goal post and experiences the backward force of . Step 2 of 5 Since the force is in backward direction, therefore, the sign will be negative. Hence, The time required for the entire incident is, Step 3 of 5 Use the formula to get the impulse as: Substitute for . Hence, the impulse is -968 kg.m/s