A block of mass 5 kg is placed on a frictionless surface and is pushed with a fo
Practice Questions
Q1
A block of mass 5 kg is placed on a frictionless surface and is pushed with a force of 20 N. What is the acceleration of the block?
2 m/s²
4 m/s²
5 m/s²
10 m/s²
Questions & Step-by-Step Solutions
A block of mass 5 kg is placed on a frictionless surface and is pushed with a force of 20 N. What is the acceleration of the block?
Step 1: Identify the mass of the block, which is 5 kg.
Step 2: Identify the force applied to the block, which is 20 N.
Step 3: Recall Newton's second law of motion, which states that Force (F) equals mass (m) times acceleration (a), or F = ma.
Step 4: Rearrange the formula to solve for acceleration (a): a = F/m.
Step 5: Substitute the values into the formula: a = 20 N / 5 kg.
Step 6: Calculate the acceleration: a = 4 m/s².
Newton's Second Law – 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.
