Newton's Second Law of Motion: Concept of a System

Question

The same rocket sled drawn in the figure is decelerated at a rate of 191 m/s².

A rocket sled moving toward the right is shown. Underneath the sled are two vectors labeled N and w respectively. Vector N points upward and vector w points downward. Toward the bottom right of the rocket is a vector f which points to the left.

What force (in N) is necessary to produce this deceleration? Assume that the rockets are off. The mass of the system is 2050 kg. (Enter a number.)__N

Answer 1

You can determine this with f=ma.

m=2050 kg.

a=(-191) m/sec/sec

N and w are not necessary to solve this problem. They will become important when you start discussing friction.