Q. A ball weighing 250 gm is thrown vertically upwards with a velocity of 980 cm/sec. The time that the ball will take to return back to earth would be (Solved)
1. 1 sec
2. 4 sec
3. 2 sec
4. 5 sec
5. 3 sec
- c. 2 sec
1. 1 sec
2. 4 sec
3. 2 sec
4. 5 sec
5. 3 sec