Momentum _ GCSE Physics

The video tutorial explains momentum, a property of moving objects dependent on mass and velocity. It introduces the formula P = MV and provides a basic example. The tutorial then explores momentum in collisions, emphasizing the conservation of momentum law, which states that total momentum before and after a collision remains constant. A detailed example involving two cars illustrates how to calculate post-collision velocity using this principle.

What is the formula for calculating momentum?

• P = V/M

• P = M/V

• P = MV

• P = M + V

In the example of a 20-kilogram trolley, what is its momentum if it travels at 2 meters per second?

• 20 kilogram meters per second

• 50 kilogram meters per second

• 30 kilogram meters per second

• 40 kilogram meters per second

What does the conservation of momentum state?

• Momentum is always lost in a collision.

• Momentum is always gained in a collision.

• Momentum is irrelevant in collisions.

• Momentum before a collision is equal to momentum after the collision.

If a car with a mass of 1000 kg traveling at 7 m/s hits a stationary car of 1500 kg, what is the combined velocity after the collision?

• 3.5 meters per second

• 4.2 meters per second

• 6.0 meters per second

• 5.0 meters per second

Why is it necessary to consider the direction of momentum in collisions?

• Because momentum is always positive.

• Because momentum does not change direction.

• Because momentum is a vector quantity.

• Because momentum is a scalar quantity.