Answer:
Force = 400 Newton
Explanation:
Given the following data;
Mass = 100 kg
Acceleration = 4m/s²
Newton's Second Law of Motion states that the acceleration of a physical object is directly proportional to the net force acting on the physical object and inversely proportional to its mass.
Mathematically, it is given by the formula;

Hence, to find the force needed, we would use the above formula.
Substituting into the formula, we have;
Force = 100 * 4
Force = 400 Newton
Answer:
Angel Falls is the world's highest waterfall.
979 meters height
Answer:
He must notify Security Manager.
Explanation:
As the email received by Sam contains confidential content information, he must notify the Security Manager immediately, so that possible flaws in the security system can be investigated quickly and effectively, in addition, Security Manager is the professional capable of analyzing and determine the reason for sending that email, who sent it and what the landlords should do to avoid this type of problem.