The smallest unit that makes up matter is an atom!
Answer:
The change in gravitational potential energy of the climber-Earth system is 
Explanation:
From the question we are told that
The mass of the hiker is 
The time taken is 
The vertical elevation after time T is 
The change in gravitational potential is mathematically represented as

here g is the acceleration due to gravity with value
substituting values


I personally would live on Mars cuz that is red cuz
Answer:

Explanation:
Given that

We know that acceleration a given as




We know that



So the magnitude of force F

Answer:
A mirror that has a reflecting surface that is recessed inward is called concave mirror