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Description
Flashcards by kate.siena, updated more than 1 year ago
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Created by kate.siena
over 10 years ago
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| Question | Answer |
| What is a scalar? | A quantity with magnitude only |
| What is a vector? | A quantity which has magnitude and an associated direction |
| How do you find the speed of an object on a distance time graph? | You calculate the gradient of the line |
| What is the velocity of an object? | Its speed in a given direction |
| How do you determine the distance travelled by an object on a velocity time graph? | Calculate the area under the line |
| Whenever two objects interact, the forces they exert on each other are 1. Unequal and parallel 2. Equal and parallel 3. Equal and opposite 4. Unequal and opposite | 3. Equal and opposite |
| What is a resultant force? | A single force that has the same effect on the motion as the original forces all acting together |
| If the resultant force acting on a stationary object is zero, what will happen? | The object will remain stationary |
| If the resultant force acting on a stationary object is not zero, what will happen? | The object will accelerate in the direction of the resultant force |
| If the resultant force acting on a moving object is zero, what will happen? | The object will continue at the same speed in the same direction |
| If the resultant force acting on a moving object is not zero, what will happen? | The object will accelerate in the direction of the resultant force |
| What is the conservation of momentum? | The idea that the total momentum before an event is equal to the total momentum after the event |
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