Newton's Second Law Formula Explained
Newton's second law of motion describes the relationship between the force applied to an object, the object's mass, and its acceleration.
The Equation
The fundamental equation representing Newton's second law is:
$F = ma$
Variable Definitions
- $F$ represents the net force acting on the object (measured in Newtons, N).
- $m$ represents the mass of the object (measured in kilograms, kg).
- $a$ represents the acceleration of the object (measured in meters per second squared, m/s2).
This equation states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
Analysis of Options
Let's examine the given options:
- $F = mc^2$: This is Einstein's famous equation relating energy (E) and mass (m), not Newton's second law.
- $F = AP$: This is not a standard physics equation representing Newton's second law.
- $F = ma$: This accurately represents Newton's second law of motion.
- $F = \frac{1}{2}mv^2$: This equation represents kinetic energy (KE), not the force described in Newton's second law.
Therefore, the correct equation for Newton's second law of motion is $F = ma$.
Similar Questions
- The rate of change of momentum of an object is proportional to the applied unbalanced force in the direction of the force. This rule is known as:
What will be the resultant force if a body of mass 10 kg is moving with an acceleration of 5 m/sec2?
Action and reaction forces are exerted on which bodies during an interaction?
- What will happen to a person's weight when he is in a moving elevator?
- A constant force acts on an object of mass $10\text{ kg}$ for a duration of $2\text{ seconds}$. It increases the object's velocity from $5\text{ metres/second}$ to $10\text{ metres/second}$. Find the magnitude of the applied force. Now, if the force is applied for a duration of $5\text{ seconds}$, what would be the final velocity of the object?
A box initially at rest is pushed with a force of 30 N to the right while friction applies a force of 30 N to the left. What happens to the motion of the box?
Important Questions from Laws of Motion
Which of the following is correct?
I. The mass of an object is a measure of its inertia
II. In an isolated system the total momentum remains conserved
A 20.0 kg block is placed on a smooth horizontal table. A horizontal force of 12.0 Newton is applied to the block. The position of the block at 5.0 sec is
A subway train starts from rest at a station and accelerates at a rate of 3 ms-2 for 10s. It then runs at a constant speed for 20s and decelerates at 5 ms-2 unit it stops at the next station. The distance between the two stations is:
In a desert, a beetle's motion sends fast longitudinal pulses, vL = 150 ms-1, and slower transverse pulses, vS = 50 ms-1, along the sand's surface. The sand scorpion has eight legs; spread roughly in a circle of 5 cm diameter, intercepts the faster longitudinal pulses 4.0 ms earlier than the slower transverse pulse. The pray is located at a distance of:
When we jump out of a boat, the boat moves in the opposite direction. This is due to:
