Rebounding: Basketball Player Exerts 280lbs of Force on Floor

[09mcibrian]

A 250 pound basketball player pushes against the floor with an additional force of 30 pounds in order to accelerate upwards after the rebound. The floor exerts a force back upon the player of ______

A) 30 pounds
B) 220 pounds
C) 250 pounds
D) 280 pounds
E) not enough info to tell


I think it is D because wouldn't you need the same force?

pleasee help mee :)

 

[Hootenanny]

A 250 pound basketball player pushes against the floor with an additional force of 30 pounds in order to accelerate upwards after the rebound. The floor exerts a force back upon the player of ______

A) 30 pounds
B) 220 pounds
C) 250 pounds
D) 280 pounds
E) not enough info to tellI think it is D because wouldn't you need the same force?

pleasee help mee :)

Welcome to Physics Forums.

You are indeed correct. The Baseball player exerts a total force of 280 pounds (250 pounds from his weight and an additional 30 pounds to accelerate upwards), hence by Newton's 3rd law the ground must exert a force of equal magnitude on the player.