We know how by neglecting the air resistance, the problems of projectile motion can be easily solved and analysed. Now we consider the case of the collision of a ball with a wall. In this case the problem of collision can be simplified by considering the case of elastic collision only. When a ball collides with a wall we can divide its velocity into two components, one perpendicular to the wall and other parallel to the wall. If the collision is elastic then the perpendicular component of velocity of the ball gets reversed with the same magnitude. The other parallel component of velocity will remain constant if given wall is smooth. Now let us take a problem. Three balls ‘A’ and ‘B’ & ‘C’ are projected from ground with same speed at same angle with the horizontal. The balls A, B and C collide with the wall during their flight in air and all three collide perpendicularly with the wall as shown in figure.
Physics · Kinematics part-2 Projectile Motion · Inclined projectile
We know how by neglecting the air resistance, the problems of projectile motion can be easily solved and analysed. Now we consider the case of the collision of a ball with a wall. In this case the problem of collision can be simplified by considering the case of elastic collision only. When a ball collides with a wall we can divide its velocity into two components, one perpendicular to the wall and other parallel to the wall. If the collision is elastic then the perpendicular component of velocity of the ball gets reversed with the same magnitude.
The other parallel component of velocity will remain constant if given wall is smooth. Now let us take a problem. Three balls ‘A’ and ‘B’ & ‘C’ are projected from ground with same speed at same angle with the horizontal. The balls A, B and C collide with the wall during their flight in air and all three collide perpendicularly with the wall as shown in figure.
Sub-question 1
Which of the following relation about the maximum height H of the three balls from the ground during their motion in air is correct:
Options
Sub-question 2
If the time taken by the ball A to fall back on ground is 4 seconds and that by ball B is 2 seconds. Then the time taken by the ball C to reach the inclined plane after projection will be:
Options
Sub-question 3
The maximum height attained by ball ‘A’ from the ground is:
Options