In a projectile motion the velocity,
1. | is always perpendicular to the acceleration |
2. | is never perpendicular to the acceleration |
3. | is perpendicular to the acceleration for one instant only |
4. | is perpendicular to the acceleration for two instants |
1. | km | 2. | km |
3. | km | 4. | km |
1. | |
2. | |
3. | |
4. |
Two projectiles are launched, one at twice the speed of the other; the slower one at and the faster one at Their horizontal ranges are in the ratio: (slower : faster)
1. | 2. | ||
3. | 4. |
The velocity of a projectile at the initial point is Its velocity (in m/s) at the point is:
1. | 2. | ||
3. | 4. |
If two projectiles, with the same masses and with the same velocities, are thrown at an angle and with the horizontal, then which of the following quantities will remain the same?
1. | time of flight |
2. | horizontal range of projectile |
3. | maximum height acquired |
4. | all of the above |