A 3 kg object is at rest on a table. If a force of 15 N is applied horizontally,
Practice Questions
Q1
A 3 kg object is at rest on a table. If a force of 15 N is applied horizontally, what is the object's acceleration?
5 m/s²
10 m/s²
15 m/s²
20 m/s²
Questions & Step-by-Step Solutions
A 3 kg object is at rest on a table. If a force of 15 N is applied horizontally, what is the object's acceleration?
Correct Answer: 5 m/s²
Step 1: Identify the mass of the object. The mass is given as 3 kg.
Step 2: Identify the force applied to the object. The force is given as 15 N.
Step 3: Use the formula for acceleration, which is a = F/m, where 'a' is acceleration, 'F' is force, and 'm' is mass.
Step 4: Substitute the values into the formula: a = 15 N / 3 kg.
Step 5: Calculate the acceleration: 15 N divided by 3 kg equals 5 m/s².
Step 6: Conclude that the object's acceleration is 5 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.
