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Inga [223]
3 years ago
14

An example of a constant acceleration is

Physics
2 answers:
serious [3.7K]3 years ago
8 0
An example is free fall ,
iren2701 [21]3 years ago
8 0
Another example is a plane crashing.
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A 0.42 kg shuffleboard disk is initially at rest when a player uses a cue to increase its speed to 4.2 m/s at constant accelerat
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Answer

given,

mass of the shuffleboard disk = 0.42 kg

speed of the cue is increased to = 4.2 m/s

acceleration takes over 2 m then acceleration is zero.

the disk additionally slide to 12 m

final speed of disk = 0 m/s

a) increase in thermal energy

\Delta E_t = \dfrac{1}{2}m(v_1^2-v_2^2)

\Delta E_t = \dfrac{1}{2}\times 0.42 \times (4.2^2-v_2^2)

\Delta E_t = 3.704\ J

b)  \Delta E_t = F_f.d

F_f is the frictional force

     3.704= 12.F

      F_f = 0.308\ N

increase in thermal energy for entire movement of 14 m

     \Delta E_t = 0.308\times 14

     \Delta E_t =4.312 \ J

c)  Work done on the disk by the cue

  W = \Delta KE + \Delta E_{t}

  W = \dfrac{1}{2}\times 0.42 \times (4.2^2-0^2)+ F_f \times d

  W = 3.704+ 0.308 \times 2

   W = 3.704 + 0.616

   W  = 4.32 J

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The object will feel minimum force of gravity at the
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When a parent cell divides more times than usual during mitosis, the division of chromosomes between the chromosomes would not be proper. For example, a daughter cell may end up with one chromosome less than the parent cell. This ultimately results in genetic disorders.

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At the top of the path, the horozontal velocity is___.
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the answer is A have a nice day hope I helped

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