- False 6. An object in motion will eventually stop by itself even without external forces. 7. Newton's Third Law applies only to stationary objects. 8. The net force is zero when an object moves at constant velocity. 9. Mass and weight are the same thing. 10. The acceleration due to gravity is constant near Earth's surface. Fill in the Blanks (1 mark each) 11. The tendency of an object to resist changes in its state of motion is called __ 12. In the absence of external forces , an object will continue moving with __ velocity. 13. The SI unit of mass is __ 14. Newton's Second Law states that acceleration is directly proportional to __ and inversely proportional to __ 15. When a person jumps, they push down on Earth with a force that is __ to the force Earth exerts on them. Calculations 16. A force of 150 N acts on a mass of 30 kg. Calculate the acceleration. 17.Calculate the force required to accelerate a 75 kg mass at 6m/s^2 18.If a 2000 kg truck accelerates from 0 to 15m/s in 3 seconds, what is the force applied? 19.Calculate the mass of an object if a force of 320 N causes it to accelerate at 8m/s^2 20.A 0.25 kg tennis ball experiences a force of 10 N What is its acceleration?
- 17^circ C to Kelvin 383 K to Fahrenheit
- The industrial revolution led to an overuse of nonrenewable resources.Some examples of non-renewable resources used for energy are coal,natural gas, and netroleum. In recent years scientists have expressed a need for conserving Eart resources. In Florida for example,solar panels are used as an alternative energy source to nonrenewable energy sources Solar Panels are designed to absorb the sun's rays as a source of energy The purpose of the panels is to change solar energy into what form of energy? Chemical Mechanical Electrical Kinetic energy
- 28. Carbon dioxide is heavier than air. The gas is collected in the 'laboratory by A. Upward delivery B. Downward delivery C. Downward displacement D. Passing over water
- 3. The Law of Conservation of Energy Energy is neither created nor destroyed.Instead,it is transformed from one form of energy to another or transferred from one object to another. If the roller coaster does not add any motorized energy and relies on only gravitational potential energy, will the cart be able to reach position 5? Use the Law of conservation in your explanation and include in your explanation any energy transfers or transformations to other forms of __
