Answer:
2km
Explanation:
Given data
We are told that the direction traveled are
North>>>East>>>South
Hence the displacement is defined as the distance away from the initial position is
Initial position =18km
FInal position = 16km
The displacement = 18-16= 2km
Hence the displacement is 2km
Not necessarily, it just means that the Scientific theory was not complete and needs additional information, research, and ideas.
90.9 is the velocity of an airplane
Complete Question
A 75 kg man and a 100. Kg woman are playing tug of war on a frictionless surface. The man accelerates toward the woman at 2.0 m/s2.How much force does she use to pull on the rope
Answer:
The value is 
Explanation:
From the question we are told that
The mass of the man is 
The mass of the woman is
The acceleration of the man is 
Generally the force which she used to pull the rope is mathematically represented as

=> 
=> 
Answer:
Part a)

Part b)

Explanation:
Part a)
As we know that there is no friction in the path
So here we can use energy conservation to find the distance moved by the mass
Initial spring energy = final gravitational potential energy
so we will have




Part b)
Now if spring is connected to the block then again we can use energy conservation
so we will have

so we will have



so total distance moved upwards is
