A 60kg boy is riding his bike to school. His acceleration is 15 m/sec^2. Determine the magnitude of the force he is exerting.

To determine the magnitude of the force that the boy is exerting, we can use Newton's second law of motion, which states that the force exerted on an object is equal to the mass of the object multiplied by its acceleration.

The mass of the boy is given as 60 kg, and the acceleration is given as 15 m/sec^2. Plugging these values into the equation, we have:

Force = mass * acceleration
Force = 60 kg * 15 m/sec^2

To calculate this, we multiply 60 kg by 15 m/sec^2:

Force = 900 kg*m/sec^2

Since the unit of force is measured in Newtons (N), we can convert the unit:

1 N = 1 kg*m/sec^2

Therefore, the magnitude of the force the boy is exerting is 900 N.