MCQOPTIONS
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| 1. |
A cannon ball is fired at an angle of 15° with the horizontal. If it lands 45m from the cannon (on horizontal ground), then at what speed (in m/s) did it exit from the muzzle? (use g = 10m/s2) |
| A. | 20 |
| B. | 30 |
| C. | 10 |
| D. | 40 |
| Answer» C. 10 | |