Choose the correct option among the following.

The correct answer is Impulse = Force x time duration.

Key Points

• Impulse is defined as the change in momentum of an object when a force is applied over a time interval.
• The formula for impulse is given by the product of the average force and the time duration for which the force is applied: Impulse = Force x time duration.
• The unit of impulse in the International System of Units (SI) is the Newton-second (Ns).
• Impulse can also be understood as the area under the force-time graph.

Important Points

• The concept of impulse is important in understanding collisions and impacts in physics.
• Impulse is a vector quantity, having both magnitude and direction.
• In a closed system where no external forces act, the total impulse is zero, leading to the conservation of momentum.
• Impulse can be calculated for variable forces by integrating the force over the time interval.