Physical Science Midterm

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

Give an example of kinetic energy.

Back

Water falling down a waterfall is an example of kinetic energy.

Front

What is work in physics?

Back

Work is defined as the transfer of energy that occurs when a force is applied to an object and the object moves in the direction of the force. It is calculated as Work = Force x Distance.

Front

Is lifting a backpack work?

Back

Yes, lifting a backpack is an example of work because a force (your muscles) is applied to move the backpack a certain distance.

Front

What is a beaker used for in science?

Back

A beaker is a cylindrical container used in laboratories for mixing, stirring, and heating liquids.

Front

How do you calculate acceleration?

Back

Acceleration is calculated using the formula a = (final velocity - initial velocity) / time.

Front

What is the acceleration of a roller coaster that goes from 6.0 m/s to 70 m/s in 4 seconds?

Back

The acceleration is 16 m/s².

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or configuration. For example, a rock at the top of a hill has gravitational potential energy.

Front

What is the difference between kinetic and potential energy?

Back

Kinetic energy is the energy of motion, while potential energy is stored energy based on an object's position.

Front

What is the formula for calculating gravitational potential energy?

Back

Gravitational potential energy is calculated using the formula PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.