Question

A stone is thrown vertically upward with an initial velocity of 14 ms-¹. Find the maximum height reached and the time of ascent. ​

Answer 1

Answer:

1.Complete the sentences:

(i) The poet felt a sense of companionship with which cheered him up.

(ii) __threw the tablecloth into the fire. (iii) A caused snow to fall on the speaker.

(iv)_was Yannick's cousin.

(v)The Psammead was about the size of a large

(vi)Annie always waited around near the (vii)Feluda and Topshe are on a holiday in

(viii). was a suspect because he collected antiques (ix)_was the paying guest of Rajen Babu.

(x)The helped Milkha Singh decide that he wanted to run for India and make his country proud.

Answer 2

Explanation:

Explanation:

Answer:

$\setlength{\unitlength}{1mm}\begin{picture}(8,2)\thicklines\multiput(9,1.5)(1,0){50}{\line(1,2){2}}\multiput(35,7)(0,4){13}{\line(0,1){2}}\put(10.5,6){\line(3,0){50}}\put(35,60){\circle*{10}}\put(37,7){\large\sf{u = 14m/s}}\put(37,55){\large\sf{v = 0 m/s}}\put(20,61){\large\textsf{\textbf{Stone}}}\end{picture}$

Initial Velocity ( u ) = 14 m/s

Final Velocity ( v ) = 0 m/s

Gravity = - 10 m/s²

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$\underline{\bigstar\:\textsf{By Third Equation of Gravity :}}$

$:\implies\sf v^2-u^2=2gh\\\\\\:\implies\sf (0)^2-(14)^2=2 \times (-10) \times h\\\\\\:\implies\sf 0- 196=-20 \times h\\\\\\:\implies\sf -196 = - 20 \times h\\\\\\:\implies\sf \dfrac{ - 196}{ - 20} = h\\\\\\:\implies\underline{\boxed{\sf h = 9.8 \:metres}}$

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