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Question 14 Marks
Instruction: The table given below shows distance (in cm) travelled by the bodies $A, B$ and $C$. Read this data carefully and answer the questions which follow. Distance (in cm) covered by different bodies:
Time
Body A
Body B
Body C
$1$st second
$20$
$20$
$20$
$2$nd second
$20$
$36$
$60$
$3$rd second
$20$
$24$
$100$
$4$th second
$20$
$30$
$140$
$5$th second
$20$
$48$
$180$
  1. Which of the bodies is moving with:
  1. Constant speed?
  2. Constant acceleration?
  1. Which of the bodies covers:
  1. Maximum distance in $3$rd second?
  2. Minimum distance in $3$rd second?
  1. Which of the bodies is moving with non-uniform acceleration?
Answer
  1. Bodies moving:
  1. The body $A$ is moving with constant speed of $20cm/s$.
  2. The body $C$ is moving with constant acceleration.
$\frac{(60-20)}{1}=\frac{(100-60)}{1}=\frac{(140-100)}{1}=\frac{(180-140)}{1}$
$40=40=40=40$
  1. Bodies covers:
  1. Body $C$ covers maximum distance $100\ cm$ in $3rd$ second.
  2. Body $A$ covers minimum distance in $3rd$ second.
  1. Body $B$ is moving with non-uniform acceleration and body $C$ is moving with uniform acceleration.
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Question 24 Marks
Answer
  1. Bodies moving:
  1. The body A is moving with constant speed of 20cm/s.
  2. The body C is moving with constant acceleration.

$\frac{(60-20)}{1}=\frac{(100-60)}{1}=\frac{(140-100)}{1}=\frac{(180-140)}{1}$

$40=40=40=40$

  1. Bodies covers:
  1. Body C covers maximum distance 100cm in 3rd second.
  2. Body A covers minimum distance in 3rd second.
  1. Body B is moving with non-uniform acceleration and body C is moving with uniform acceleration.
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