The speed of a bobsled is increasing, because it has anacceleration of 2.4 m/s2 .At a given instant in time,the forces resisting the motion, including kinetic friction and airresistance, total 450 N. The mass of the bobsled and its riders is270 kg.
(a) What is the magnitude of the force propelling the bobsledforward?
(b) What is the magnitude of the net force that acts on the bobsled?