how much force is excerted by a 25kg rock rolling down a hill at 3 meters per second per second?
To calculate the force exerted by a moving object, we can use Newton's second law of motion, which states that force (F) is equal to the mass (m) of the object multiplied by its acceleration (a).
In this case, the mass of the rock is given as 25 kg, and the acceleration is given as 3 meters per second squared (3 m/s^2). To find the force, we can substitute these values into the equation F = m × a:
F = 25 kg × 3 m/s^2
Now we can calculate the force:
F = 75 kg⋅m/s^2
The unit kg⋅m/s^2 is called a Newton (N), which is the standard unit of force. Therefore, the force exerted by the 25 kg rock rolling down the hill at an acceleration of 3 m/s^2 is 75 N.