Science 9 Physics

Which dimension(s) of UAM deals with the effect of gravity on the motion of an object?

• Horizontal

• Vertical

• Both horizontal and vertical

• Neither horizontal or vertical

When shooting a basketball, what is the path followed by a projectile motion?

• parabola

• circle

• ellipse

• straight

Which of the following factors affect the momentum of an object?

• density

• volume

• mass

• temperature

Which of the following equations represents the relationship between momentum, mass, and velocity?

• p = m / v

• p = m × v

• p = m +v

• p = m - v

What is the energy of a motorcycle moving slowly at the top of a hill?

• entirely kinetic

• entirely potential

• entirely gravitational

• both kinetic and potential

A ball is rolling down a hill. As it reaches the bottom, which of the following statements is true?

• The ball has gained mechanical energy

• The ball's mechanical energy remains constant.

• The ball's potential energy is converted into kinetic energy.

• The ball has lost mechanical energy

Which of the following is an environmental concern associated with certain methods of electrical energy generation in power plants?

• Excessive use of water resources

• Overuse of natural gas reserves

• Depletion of wind resources

• Soil contamination due to nuclear waste

What is the primary purpose of a turbine in a power plant?

• To store excess electrical energy

• To generate heat for the power plant

• To convert mechanical energy into electrical energy. 

• To convert electrical energy into mechanical energy.

Which of the following quantities is the energy that transfers from one object to another because of the temperature difference between them?

• heat

• temperature

• power

• work

Which of the energy sources cited below is LEAST harmful to the environment?

• coal

• geothermal

• wind

• petroleum