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Roosevelt PS1
Review of terms and problems from 2nd Semester
| Question | Answer |
|---|---|
| An object speeding up would have what type of acceleration, positive or negative? | Positive |
| The tendency of an object to resist change in motion is known as | Newton's 1st Law |
| Force can be described as a _____________ or _________________. | push or pull |
| An object in motion tends to stay in motion | Newton's 1st Law |
| The label Newton can also be represented as | kg*m/s2 |
| What acceleration is produced when a force of 80 N is applied to a mass of 4 kg? | 20 m/s2 |
| Momentum is equal to _______________ x _________________ | mass x velocity |
| A whale has a mass of 150,000 kg and a top swimming speed of 25 m/s. What is its momentum? | 3,750,000 kg m/s |
| A man has a mass of 70 kg. What is his weight? | 686 N |
| Friction is a force that _________________ motion. | opposes |
| This is the force of friction that must be overcome to start two objects moving against one another. | static friction |
| Three types of kinetic friction: | sliding, rolling, fluid |
| List the three types of kinetic friction in order of decreasing magnitude: | sliding, rolling, fluid |
| When moving a box, which friction is generally higher: Static or Kinetic (sliding)? | Static |
| If the mass stays the same but the velocity is doubled what will happen to the momentum of an object? | It will double |
| A baseball hit with a force of 65N has a mass of 0.5 kg. What is its acceleration? | 130 m/s2 |
| Kinetic energy is the energy of _________________. | motion |
| Potential energy depends on _______________ and _________________. | weight and height |
| Law of Conservation of Energy: Energy is neither ________________ nor ____________________. | created, destroyed |
| What type of energy does a boulder sitting at the top of a hill have? | gravitational potential energy |
| What type of energy does a boulder rolling down a hill have? | kinetic energy |
| At the highest point of its swing the pendulum has _______________ potential energy. | maximum or 100% |
| At the lowest point of its swing the pendulum has _________________ kinetic energy. | maximum or 100% |
| What is the kinetic energy of a 0.4 kg ball thrown at a speed of 20 m/s? | 80 J |
| An object has a kinetic energy of 600J and a speed of 10 m/s. What is its mass? | 6 kg |
| If I increase the velocity of a car the car's momentum ... | increases |
| This equation describes Newton's Second Law | F=m*a |
| Weight equals _________________ x __________________ and is measured in ________________________. | mass, gravity newtons |
| A person in a car keeps moving after the brakes are applied to the car is an example of Newton's ____________ Law of Motion. | First |
| When the pull of gravity is equal to the push of air resistance the object has reached | terminal velocity |
| How could a fighter jet and a 747 jet have the same momentum? | The fighter jet has a faster velocity than the 747. |
| The type of energy in food | Chemical potential energy |
| The type of energy in a spring | Elastic potential energy |
| Mass in motion | momentum |
| The total amount of kinetic and potential energy in a system | mechanical energy |
| Friction converts some of a systems mechanical energy into | thermal energy |
| Energy is the ability to cause | change |
| Inertia in motion | momentum |
| This type of energy is based on an object position on Earth | gravitation potential energy |
| This type of energy is contained in moving objects | kinetic |
| Fuels store energy in the form of ___________________ | chemical bonds or chemical energy |
| The initial hill on the tallest roller coaster is 139 m. If the riders and carts have a mass of 1000 kg, what is the Gravitational Potential Energy at the top of the initial hill? | 1,362,200 J |
| The Law of Conservation of Energy says... | Energy is neither created nor destroyed |
| The energy stored in a waterfall | Mechanical (kinetic) |
| A windmill converts ________________energy into __________________ energy. | mechanical, eletrical |
| A waterfall converts ______________ energy into ________________ energy. | mechanical, electrical |
| A battery converts _____________ energy into ___________ energy. | chemical, electrical |
| The sun converts _______________ energy into _______________ energy. | nuclear, light or heat |
| Eating a meal before running a race converts ___________ energy into ________________ energy. | chemical, mechanical |
| A nuclear powered aircraft carrier moving through the water is an an example of converting ________________ energy into _________________ energy. | nuclear, mechanical |
| The battery in your cell phone is an example of converting _____________ energy into ______________________ energy. | chemical, electrical |
| A windmill converts_____________________ energy into _________________ energy. | mechanical, electrical |
| A coal power plant converts ___________________ energy into _______________ energy. | chemical, electrical |
| In order to blow dry your hair you must convert ________________ energy into _________________ energy. | electrical, thermal (or mechanical) |
| A natural gas or propane furnace converts _________________ energy into __________________ energy. | chemical, thermal |
Created by:
JKSW2014
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