physics midterm review

Front

What is an inelastic collision?

Back

An inelastic collision is a type of collision where the colliding objects stick together after the impact, resulting in a loss of kinetic energy.

Front

What is the formula for speed?

Back

The formula for speed is s = d/t, where s is speed, d is distance, and t is time.

Front

How are acceleration and velocity related?

Back

Acceleration is the rate of change of velocity over time.

Front

What is the difference between elastic and inelastic collisions?

Back

In elastic collisions, objects bounce off each other, conserving kinetic energy. In inelastic collisions, objects stick together, and kinetic energy is not conserved.

Front

How are mass and inertia related?

Back

Mass and inertia are directly proportional; greater mass means greater inertia.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object due to its motion, calculated as KE = 1/2 mv², where 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 calculated as PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

Front

What is the law of conservation of momentum?

Back

The law of conservation of momentum states that the total momentum of a closed system remains constant if no external forces act on it.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity representing how fast an object moves, while velocity is a vector quantity that includes both speed and direction.

Front

What is Newton's first law of motion?

Back

Newton's first law states that an object at rest will remain at rest, and an object in motion will remain in motion at a constant velocity unless acted upon by a net external force.