Based on the Previous two questions: According to Newton's Second Law, how much force does Marisa need to apply in order to stop the sled? a
0.048 kg m/s
b
-0.075 N
c
2.50 N
d
-0.048 N

See explanation

Explanation:

The question is incomplete, as the required parameters are missing. The general solution to this is as follows;

First, get the mass (m) and the acceleration (a) of the sled

So, the force (f) to stop the sled is:

---- Newton 2nd law

However, the force to stop the sled will be in the opposite direction of the sled.

So:

Assume that:

The required force is:

wavelength divides in half and speed stays the same.