Chapter 4, Problem 92A

(a)

To determine

To Complete:The problem so that it must be solved using the concept Newton’s second law.

Explanation of Solution

Introduction:

Newton's second law state that the rate of change of momentum is directly related to theforce applied on the object.

The problem will be: “A worker is unloading a truck and gives a 10-kg-crate of oranges, a push across the floor and the crate accelerates at $2{\text{ m/s}}^{\text{2}}$ . Calculate the force applied by a worker on the crate”.

(b)

To determine

To Complete: The problem so that it must be solved using the concept Newton’s third law.

Explanation of Solution

Introduction:

Newton's third law states that to every action there is a reaction which is equal but opposite in direction.

The problem will be: “A worker is unloading a truck and gives a 10-kg-crate of oranges, a push across the floor and the crate accelerates at $2{\text{ m/s}}^{\text{2}}$ . Calculate the reaction force exerted by the floor on the crate”.