2D kinematics -- Calculate the acceleration of the jumping athlete

[Stewkatt]

Homework Statement

An athlete with a mass of 62 kg jumps and lands on his feet. The ground exerts a total force of 1.1 x 10^3 N [backward 55 degrees up] on his feet. Calculate the acceleration of the athlete

Relevant Equations

F=delta p/delta t =ma

this is my work but the answers say 11 m/s^2 so I made an error somewhere. Also if someone could help me with solving the direction for the acceleration, that would be greatly appreciated.

 

[Lnewqban]

Perhaps because you have omitted the "backward 55 degrees up" direction of the reactive force.

 

[Stewkatt]

yay, I figured it out. I still have to find the direction of acceleration and that’s it.

 

[Lnewqban]

yay, I figured it out. I still have to find the direction of acceleration and that’s it.

Did you find the direction of acceleration?