An object that is thrown straight up falls back to Earth. This is one-dimensional motion. (a) When is its velocity zero? (b) Does its velocity change direction? (c) Does the acceleration have the same sign on the way up as on the way down?

Q: v → = ( 6 t − 4 t 2 ) i ^ − 8 j ^.  Here v → is in meters per second and t in seconds. (a) What are…

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A: Given that

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A: The solution of the above problem is given below

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A:

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A: Given data: motion xt=10t-2t2 m Time t = 2 s Time t = 3 s

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Q: -2 5) The position of a particle for t > 0 is given by ř(t) = (3.0 t² î – 7.0 t³ĵ- 5.0 t-² k) m (a)…

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A: Given: Position of the particle,r→t=3.0 t2 i^ -7.0 t3j^-5.0 t-2 k^m (1)

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Q: An initially stationary hovercraft sits on a large lake. When a whistle blows the hovercraft…

A: See below

Q: what is the magnitude of acceleration (assumed constant) in m/s2 and in g's (g=9.80 m/s2)

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A: "Since you have posted a question with multiple sub parts, we will solve first three sub parts for…

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A:

Q: An object moving with uniform acceleration has a velocity of 12 cm/s in the positive x direction…

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A: By using equation of kinematics v2 = u2 + 2S a) initial velocity u = 5.00 m/s final velocity v =10.0…