Collisions and Momentum

Front

What is momentum?

Back

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

Front

How does mass affect momentum?

Back

An increase in mass results in a proportional increase in momentum, meaning heavier objects have more momentum at the same speed.

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion, calculated using the formula KE = 1/2 mv², where KE is kinetic energy, m is mass, and v is velocity.

Front

What is potential energy?

Back

Potential energy is the stored energy of an object due to its position or state, commonly associated with height in gravitational fields.

Front

How do seat belts work in a collision?

Back

Seat belts restrain passengers, reducing their speed during a collision and preventing them from being thrown forward, thus minimizing injury.

Front

What role do airbags play in a car crash?

Back

Airbags inflate rapidly during a collision to cushion passengers, spreading the force of impact over a larger area and reducing injury.

Front

Why do larger vehicles pose greater risks in collisions?

Back

Larger vehicles have more mass, resulting in greater momentum at a given speed, which can lead to more severe impacts and damage.

Front

What happens to energy during a collision?

Back

During a collision, kinetic energy can be transformed into other forms of energy, such as thermal energy, sound, and deformation of the vehicles.

Front

What is the law of conservation of momentum?

Back

The law of conservation of momentum states that in a closed system, the total momentum before a collision is equal to the total momentum after the collision.

Front

How does increasing mass affect the movement of an object post-collision?

Back

Increasing the mass of an object involved in a collision generally results in less movement of that object post-collision due to its higher momentum.