Conceptual Questions, Forces and Motion
See here answers to the conceptual questions included in the new course of Physics grade 11.
| S.No | Description of question |
|---|---|
| Question 1 | If you are riding on a train that speeds past another train moving in the same direction on an adjacent track, it appears that the other train is moving backward. Why? See Answer |
| Question 2 | Can the velocity of a body reverse the direction when the acceleration is constant? If you think so, give an example. See Answer |
| Question 3 | When you stand still on the ground, how large a force does the earth exert on you? Why doesn’t this force make you rise up into the air? See Answer |
| Question 4 | A man standing on the top of a tower throws a ball vertically up with a certain velocity. He also throws another ball vertically down with the same speed. Neglecting air resistance, which ball will hit the ground with higher speed? See Answer |
| Question 5 | The cricket coach explains that the follow through with the shot will make the ball travel a greater distance. Explain the reasoning in terms of impulse-momentum theorem. See Answer |
| Question 6 | When you release an inflated (پھولا ہوا ۔۔۔ پڑسیدلے) but untied balloon, why does it fly across the room? See Answer |
| Question 7 | Modern cars are not rigid but are designed to have crumpled zones that collapse upon impact. What is the advantage of this new design? See Answer |
| Question 8 | Why we can hit a long sixer in a cricket match rather than if we toss a ball ourselves? See Answer |
| Question 9 | An aero plane while traveling horizontally dropped a bomb when it was exactly above the target. The bomb missed the target. Explain. See Answer |
| Question 10 | Calculate the angle of projection for which K.E at summit of its trajectory is equal to one-fourth of its K.E at point of projection. See Answer |
| Question 11 | For any specific velocity of projection, the range of a projectile cannot exceed from a value equal to four times the corresponding height. Explain See Answer |
| Question 12 | What is the angle for which the maximum height reached and corresponding range are equal? See Answer |
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