Question

The speed of a bobsled is increasing, because it has an acceleration of 2.44 m/s2. At a given instant in time, the forces resisting the motion, including kinetic friction and air resistance, total 595 N. The mass of the bobsled and its riders is 315 kg. (a) What is the magnitude of the force propelling the bobsled forward

Answer 1

Answer:

1363.6N

Explanation:

From the question, we are given the following

acceleration a = 2.44m/s²

Frictional force = 595N

mass of the bobsled and its riders is 315 kg

According to Newton's sector law

\sum Fx = ma

Fm-Ff = ma

Ff is the frictional force

Fm is moving force (magnitude of the force needed)

Substitute

Fm - 595 = 315(2.44)

Fm -595 = 768.6

Fm = 768.6+595

Fm = 1363.6N

Hence the magnitude of the force is 1363.6N