Momentum and Impulse Concepts

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity, represented by the formula p = mv.

Front

What is impulse?

Back

Impulse is the change in momentum of an object when a force is applied over a period of time, calculated as Impulse = Force × Time.

Front

What is the unit of momentum?

Back

The unit of momentum is kilogram meter per second (kg·m/s).

Front

What is the relationship between impulse and momentum?

Back

Impulse is equal to the change in momentum of an object.

Front

What is work in physics?

Back

Work is done when a force causes an object to move, calculated as Work = Force × Distance.

Front

What is the unit of work and energy?

Back

The unit of work and energy is joules (J).

Front

How does the direction of force affect work done?

Back

Work is positive when the force and displacement are in the same direction, and negative when they are in opposite directions.

Front

What happens to momentum in a closed system?

Back

In a closed system, the total momentum before an event is equal to the total momentum after the event (conservation of momentum).

Front

What is the formula for calculating work done?

Back

Work done (W) = Force (F) × Distance (d) × cos(θ), where θ is the angle between the force and the direction of motion.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object due to its motion, calculated as KE = 1/2 mv².