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Copiado por Robin Skailes
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Copiado por Robin Skailes
hace casi 6 años
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| Pregunta | Respuesta |
| What is a vector quantity? | Vector quantities have a magnitude and direction. |
| Give two examples of Vector quantities. | Force, velocity, displacement, acceleration, momentum etc. Anything with a value and direction. |
| What is a scalar quantity? | Scalar quantities only have a magnitude and no direction. |
| Give two examples of a scalar quantity. | Speed, distance, time, mass, temperature etc. Any value with no direction. |
| Speed and velocity are very similar. Which is a vector quantity and which is a scalar quantity? | Speed - Scalar (Magnitude but No direction) Velocity - Vector (Direction and magnitude) |
| Two bikes are travelling at 65 mph. One is travelling North west the other south east. Is their velocity the same or different? | They are travelling in different directions so their velocity will be different. |
| All forces are one of two types. Name both. | Contact or Non - contact. |
| What is the difference between contact and non contact forces? | Contact - Two objects must come into contact. Non contact - No contact required for the force to act. |
| Name two examples of contact forces. | Friction, air resistance, tension in ropes etc. |
| Name two examples of non contact forces. | magnetic, gravitational or electrostatic forces etc. |
| Fill in the blanks: When two objects interact there is a force produced on b___ objects. An i__________ pair is a pair of forces that are e____ and o_______. | When two objects interact there is a force produced on both objects. An interaction pair is a pair of forces that are equal and opposite. |
| The sun and the Earth are attracted together by gravitational forces. Is this a contact or non contact force? | The sun and the Earth are attracted together by gravitational forces. This is a NON CONTACT force. |
| A chair exerts a force on the ground. What force is produced from the ground and how strong is it? | The ground will produce an equal but opposite force to the chair. |
| Describe what is gravitational force. | The force of attraction between masses. |
| What are the two important affects of gravity? | 1. On a planet's surface, all objects will fall to the ground. 2. It gives everything a weight. |
| True or False: Weight and Mass are the same. | FALSE! Weight and mass are very different! |
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