10th Unit 2 Module 1 Assessment

Front

What is the formula for Potential Energy?

Back

Potential Energy (PE) = mgh, where m is mass (kg), g is acceleration due to gravity (9.81 m/s²), and h is height (m).

Front

What is the formula for Kinetic Energy?

Back

Kinetic Energy (KE) = \frac{1}{2}mv^2, where m is mass (kg) and v is velocity (m/s).

Front

Calculate the Potential Energy of a 100 kg object at a height of 300 m.

Back

PE = 100 kg * 9.81 m/s² * 300 m = 294300 J.

Front

Calculate the Potential Energy of a 900 kg car on a ramp 20 m high.

Back

PE = 900 kg * 9.81 m/s² * 20 m = 176580 J.

Front

Calculate the Kinetic Energy of an 80 kg biker traveling at 11 m/s.

Back

KE = \frac{1}{2} * 80 kg * (11 m/s)^2 = 4840 J.

Front

Calculate the Kinetic Energy of a 2 kg ball falling at 9 m/s.

Back

KE = \frac{1}{2} * 2 kg * (9 m/s)^2 = 81 J.

Front

What is the independent variable in an experiment testing car energy efficiency?

Back

The car's design modifications.

Front

What is the dependent variable in an experiment testing car energy efficiency?

Back

The amount of fuel that the car uses.

Front

What does 'mass' refer to in physics?

Back

Mass is a measure of the amount of matter in an object, typically measured in kilograms (kg).

Front

What does 'height' refer to in the context of Potential Energy?

Back

Height is the vertical distance of an object above a reference point, usually measured in meters (m).