2345692
| Questão | Responda |
| What is the unit for kinetic energy ? | Joule (J) |
| What is the unit for gravitational potential energy ? | Joule (J) |
| What is the name of force W ? | Weight |
| What is the name of force F ? | air resistance / drag |
| What is the name of force R ? | upthrust |
| How will the car move when forces F and P are the same size ? | stationary or constant velocity / speed |
| How will the car move if force P is larger than force F ? | The car will accelerate to the right |
| What is the size of the resultant force when an object is moving at a constant velocity ? | zero / no resultant force / 0 N |
| What is the size of the resultant force on an object when it is moving at terminal velocity ? | zero / no resultant force / 0 N |
| What type of energy does a ball have when it is thrown and is moving upwards ? | kinetic energy |
| What type of energy does a ball have when it is thrown and it reaches its highest point ? | gravitational potential energy |
| How much gravitational potential energy does a ball have when it lands on the ground ? | no gravitational potential energy / 0 J |
| Which graph shows that the object is stationary ? | b (flat line) |
| Which graph shows the object moving forwards at a steady speed ? | a (line sloping upwards) |
| Which graph shows the object moving backwards ? | c (line sloping downwards) |
| Between what times is the object stationary ? | Between 0s and 3s (flat line at 0 m/s) |
| Between what times is the object moving at a constant velocity ? | Between 5s and 8s (flat line at 8m/s) |
| What is the size of the acceleration between 3s and 5s ? | 4 m/s squared ( 8/(5-3) ) |
| How do you work out the distance traveled by the object ? | Calculate the area under the graph |
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