17.) a body is projected vertically upward with an initial velocity of 30m/s . it's velocity after 2sec
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v= u-gt
v=30-10*2
v=30-20=10m/s
v=30-10*2
v=30-20=10m/s
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v = u + at
= 30 m/s + (-10 m/s² × 2s)
= 30 m/s - 20 m/s
= 10 m/s
Velocity after 2 seconds is 10 m/s
= 30 m/s + (-10 m/s² × 2s)
= 30 m/s - 20 m/s
= 10 m/s
Velocity after 2 seconds is 10 m/s
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