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[Unless otherwise stated, use g=10m/s2 and neglect air resistance ]

- 14 m/s
- 6 m/s
- 0.4 m/s
- 40 m/s
- 2.5 m/s

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Solution

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Initial velocity u=0 m/s

Acceleration a=4 m/s2

Time t=10 s

Using first equation of motion

v=u+at

∴ v=0+4(10)=40 m/s

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