10 minutes maximum! Can you do it in 5? |
|||||||||||||||||
1. When drawing an arrow to show the size of the force of gravity on a falling meteor, which of these images shows the correct placement for the arrow? |
|||||||||||||||||
2. The force of gravity as shown by the arrow in Q1 can be labelled in many ways. Which of these is likely to marked as incorrect?
|
|||||||||||||||||
3. Which of these diagrams correctly shows the size of the forces on the meteor as it is moving at a very high velocity downwards but slowing down due to air resistance? The meteor has been drawn as a point. |
|||||||||||||||||
Q4&5. The diagram below shows a stationary block on a slope. 4. Which of the 4 diagrams below correctly shows all the forces acting on the block? |
|||||||||||||||||
5. In which direction is the resultant force acting in question 4?
| |||||||||||||||||
6&7. These questions are about friction: |
|||||||||||||||||
6. The symbol µs in the IB data book refers to the quantity.....
|
|||||||||||||||||
7. If µd is equal to 0.5, this means that the maximum force produced by friction on a moving object is half the size of....
| |||||||||||||||||
8-10. A book of mass 1.0 kg rests on a rough horizontal surface with µs= 0.4.
|
|||||||||||||||||
What is the approximate value of the reaction force on the book?
| |||||||||||||||||
9. What is the maximum frictional force preventing the book moving to the left or right if pushed?
| |||||||||||||||||
10. The horizontal surface is raised at one end so that the book rests on a slope. It remains stationary. What happens to the sizes of the reaction force and the maximum force of static friction as the surface is lifted at one end?
| |||||||||||||||||