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Description
Flashcards by muhadibfauzi, updated more than 1 year ago
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Created by muhadibfauzi
almost 9 years ago
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| Question | Answer |
| What can force do? | Force can make an object to start moving, speed up, slow down, stop moving, change direction or even change its shape. |
| Who is Isaac Newton? | He is scientist whom discovered white lights consisting many colours and that gravity is a force that effects all objects on Earth. |
| When did Isaac Newton formulated three laws of motion? | 1687 |
| What is the Newton's law? | The Newton's laws are laws created by Isaac Newton to describe the laws of motion. |
| What is Newton's first law? | An object will remain at rest unless an unequal force acts upon it. |
| What is Newton's second law? | Acceleration will produce when a force acts on a mass. The greater the mass, the greater the force is required to move it. |
| What is Newton's third law? | For every action there is an equal and opposite reaction. |
| When a force doubled, what happens to the acceleration? | When double the amount of force is acting on it, the acceleration will be doubled. |
| What is the examples of Newton's first law? | When a car travelling at 60km/h suddenly came to a complete stop, the occupants will still travel at 60km/h. |
| What is the example of Newton's second law? | When a small boy pushes a car by himself, the car will tend to stay at rest, but when two adults pushes the car, it will start move forward. |
| What is the example of Newton's third law? | When a nail is hit by a hammer, it will exerts an equal force back upon the hammer. |
| How do you calculate the total force that has acted upon an object? | Force = Mass x Acceleration |
| How do you calculate the acceleration of an object? | Acceleration = Force / Mass |
| How do you calculate the mass of an object? | Mass = Force / Acceleration |
| What is inertia? | It is the tendency to resist any change in motion. |
| If a car has 7,000 newtons of driving force and friction from the road and air, is it in motion or at rest? | The car would not be moving. |
| What is there is no friction acting on an object in motion? | The object would stay in motion forever. For example a spacecraft called Voyager I. |
| What happen when all the forces are balanced? | The object will stay still. |
| What is the reaction of a cannonball being shot? | The cannon would go back due to recoil with the same force of the ammunition that was shot. |
| Calculate the acceleration of a car having 3000 newtons forward and 600 newtons due to friction. | 3000 - 600 = 2400 N to the right. 2400/1200 = 2m/s2 |
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