11968821
Description
Flashcards by Katherine Nellis, updated more than 1 year ago
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Created by Katherine Nellis
almost 7 years ago
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| Question | Answer |
| What is force? | a push or a pull |
| What is the magnitude and direction of the net force? | 50 N to the left |
| What is the unit used to measure force? | N (Newton, named for Sir Issac Newton) |
| Are the forces balanced or unbalanced? | The forces are unbalanced (net force is not zero and the cart will change motion) |
| What is the force that pulls objects toward the center of the Earth? | Gravity (Fg) |
| What is the Normal Force? | the force of the surface pushing back on the object (Fn) |
| What is the name of the type of force that resists (or opposes) motion? | friction |
| When the sum of all forces is zero, the forces are _____________. | Balanced (no change in motion) |
| What is net force? | Net force is the sum of all forces |
| When calculating the ______ ________, you subtract forces that are opposite and add forces in the same direction. | Net Force |
| What is the magnitude and direction of the net force? | 5N to the right |
| Is the object in motion? How do you know? | The object is in motion to the right. The applied force (Fa) is larger than the friction (Ff), meaning that the object will move to the right. |
| What is Newton's 1st Law of Motion? | An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. |
| What is motion? | a change in the position of an object over time |
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