science
Grade-11
Easy
Question
When a 0.45 g air-rifle pellet is fired into a target attached to a glider on a frictionless linear air track, the glider moves 50cm in 3.8 seconds. Calculate the magnitude of the velocity of the pellet. The glider and target have a combined mass of 643 g.
- 186 m/s
- 2.8 m/s
- 17 m/s
- none
The correct answer is: 186 m/s
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