First Semester Exam Review Physical Science

Front

What is the formula to calculate weight?

Back

Weight = mass × gravity (W = m × g)

Front

What is the weight of an object with a mass of 899 kg on Mars (gravity = 3.7 N/kg)?

Back

3326 N

Front

How do you determine the ratio of two different units of measure?

Back

Divide the quantity of one unit by the quantity of the other unit.

Front

If Steven measures his bedroom floor to be 55 pillows and Tyler measures it to be 11 blankets, what is the ratio of pillows to blankets?

Back

5 pillows for every blanket.

Front

What happens to the total energy of an object when its height is increased?

Back

The total energy increases.

Front

What is the formula for kinetic energy?

Back

Kinetic Energy (KE) = 0.5 × mass × velocity² (KE = 0.5 × m × v²)

Front

Calculate the kinetic energy of a car with a mass of 200 kg moving at 15 m/s.

Back

22500 J

Front

What is gravitational potential energy?

Back

Energy an object possesses due to its position in a gravitational field.

Front

How does mass affect gravitational potential energy?

Back

Greater mass results in greater gravitational potential energy.

Front

What is the relationship between mass and weight?

Back

Weight is the force exerted by gravity on an object's mass.