A 25 kg object is pushed with a force of 100 N. If the frictional force is 25 N,
Practice Questions
Q1
A 25 kg object is pushed with a force of 100 N. If the frictional force is 25 N, what is the acceleration of the object?
2 m/s²
3 m/s²
4 m/s²
5 m/s²
Questions & Step-by-Step Solutions
A 25 kg object is pushed with a force of 100 N. If the frictional force is 25 N, what is the acceleration of the object?
Correct Answer: 3 m/s²
Step 1: Identify the mass of the object, which is 25 kg.
Step 2: Identify the applied force, which is 100 N.
Step 3: Identify the frictional force, which is 25 N.
Step 4: Calculate the net force by subtracting the frictional force from the applied force: 100 N - 25 N = 75 N.
Step 5: Use the formula for acceleration, which is acceleration (a) = net force (F) / mass (m).
Step 6: Substitute the values into the formula: a = 75 N / 25 kg.
Step 7: Calculate the acceleration: 75 N / 25 kg = 3 m/s².
Newton's Second Law of Motion – This law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
Net Force Calculation – Understanding how to calculate the net force by subtracting frictional force from the applied force.
Frictional Force – Recognizing the role of friction in opposing motion and how it affects the net force.
