Physics calculate velocity

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1.A car with a velocity of 22m/s is accelerated at a rate of 1.6 m/s for 6.8. what is the final velocity of the car

2. How far does a plane fly in 15.0s if its velocity changes from 145m/s to 70m/s at a constant accelertion?

3. An astronaut on the moon drops a feather from a height of 1.20m above surface. If the acceleration due to gravity on the moon is 1.62m/s, how long does it take a feather to reach the surface of the moon g is now -1.62m/s^2

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(Top Tutor) Daniel C.
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