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प्रश्न
A trolley, while going down an inclined plane, has an acceleration of 2 cm s−2. What will be its velocity 3 s after the start?
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उत्तर
Acceleration of trolley (a) = 2 cms-2
Time (t) = 3 s
Initial velocity (u) = 0
The first equation of motion
v = u + at
v = 0 + 2 × 3
v = 6 m/s
Velocity after starting of motion = 6 m/s
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