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Author Question: An object of mass 4 kg is thrown vertically upwards from ground level with an initial speed of 20 ... (Read 94 times)

leo leo

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on: Jul 29, 2018
An object of mass 4 kg is thrown vertically upwards from ground level with an initial speed of 20 m/s. Ignore friction and use g = 10 m/s2. What is the kinetic energy of the object just before it hits the ground?
 
  A) 800 J
  B) 400 J
  C) 0 J
  D) 100 J
  E) 200 J

Question 2

An object is moving with constant non-zero velocity in the +x-axis. The position versus time graph of this object is
 
  A) a horizontal straight line.
  B) a vertical straight line.
  C) a straight line making an angle with the time axis.
  D) a parabolic curve.
  E) a hyperbolic curve.


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djpooyouma

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Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

C


leo leo

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Reply 2 on: Jul 29, 2018
Wow, this really help

Dominic

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Reply 3 on: Yesterday
Excellent

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