Final answer:
The worker's pushing force can be calculated using Newton's second law of motion, which relates force, mass, and acceleration.
Step-by-step explanation:
When a worker pushes an object, the pushing force can be calculated using Newton's second law of motion, which states that force (F) is equal to mass (m) multiplied by acceleration (a). In this case, the force is the pushing force exerted by the worker. If we know the mass of the object being pushed and the acceleration at which it is being pushed, we can calculate the pushing force.
For example, if a worker pushes a crate up a ramp, the pushing force would depend on the mass of the crate and the angle of the ramp. If there is friction present, the pushing force would also need to overcome the force of friction.