Semester 1 exam

Front

What is kinetic energy?

Back

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

Front

At what point does a roller coaster car have the greatest kinetic energy?

Back

The roller coaster car has the greatest kinetic energy at the lowest point of the track, where its speed is highest.

Front

What is momentum?

Back

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

Front

Which has the least amount of momentum?

Back

An ant at rest has the least amount of momentum because its velocity is zero.

Front

How do you calculate average speed?

Back

Average speed is calculated by dividing the total distance traveled by the total time taken. Formula: Average Speed = Total Distance / Total Time.

Front

If a runner completes a 100 meter dash in 10 seconds, what is her average speed?

Back

Her average speed is 10 m/s, calculated as 100 meters / 10 seconds.

Front

What are electromagnetic waves?

Back

Electromagnetic waves are waves of electric and magnetic fields that travel through space. They include radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma rays.

Front

Which electromagnetic waves have the highest frequencies?

Back

Gamma rays have the highest frequencies and the shortest wavelengths among electromagnetic waves.

Front

What is a series circuit?

Back

A series circuit is a type of electrical circuit in which components are connected end-to-end, so that the current flows through each component in turn.

Front

What is a parallel circuit?

Back

A parallel circuit is a type of electrical circuit in which components are connected across common points or junctions, allowing current to flow through multiple paths.