Wyatt pulls on a sled that his friend is sitting on until the sled just begins to move. His friend and the sled have a combined mass
of 80 kg. The image below shows a free-body diagram of all the forces acting on Wyatt's friend and the sled.
800N
400N
What is the acceleration of Wyatt's friend and the sled?
OA. 5 m/s²
OB. 10 m/s²
OC. 3 m/s²
OD. 8 m/s²
800N
640N
