Question

For a moving object, the force acting on the object varies directly with the object's acceleration. When a force of 15 N acts on a certain object, and the acceleration of the object becomes 2 m/s², what is the force?

30 N
7.5 N
22.5 N
60 N

Answer 1

According to Newton's second law of motion, the force F on an object is calculated by multiplying its mass m by its acceleration a. For a wagon with mass 55 kg and acceleration of 0.0255 m/s², the force is approximately 1.4025 N.

Step-by-step explanation:

The force acting on an object varies directly with the object's acceleration according to Newton's second law of motion, which is represented by the formula F = ma, where F is the force in newtons (N), m is the mass of the object in kilograms (kg), and a is the acceleration in meters per second squared (m/s²). To find the force acting on a wagon with a mass of 55 kg and acceleration of 0.0255 m/s², we use this formula:

F = ma
F = (55 kg)(0.0255 m/s²)
F = 1.4025 N

Therefore, the force on the wagon is approximately 1.4025 N.