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densk [106]
3 years ago
5

Write any three importance of Measurement.

Physics
1 answer:
NISA [10]3 years ago
3 0

Explanation:

The three importance of measurement are as follows :-

  1. <em>measurement </em><em>is </em><em>used </em><em>to </em><em>compare</em><em> </em><em>the </em><em>items</em><em> </em><em>when </em><em>barter </em><em>system</em><em> </em><em>takes </em><em>place</em><em> </em><em>.</em>
  2. <em>measurement</em><em> </em><em>helps </em><em>in </em><em>weighing</em><em> </em><em>the </em><em>foods </em><em>,</em><em> </em><em>groceries</em><em> </em><em>etc </em><em>.</em>
  3. <em>Measurement</em><em> </em><em>are </em><em>important</em><em> </em><em>in </em><em>laboratory</em><em> </em><em>when </em><em>there </em><em> </em><em>experiments</em><em> </em><em>is </em><em>being</em><em> </em><em> </em><em>taken</em><em> </em><em> </em><em>for </em><em>different</em><em> </em><em>purposes</em><em> </em><em>.</em>

<em>Hope </em><em>it</em><em> </em><em>is </em><em>helpful</em><em> to</em><em> you</em><em> </em>

<em>✌️</em><em>✌️</em><em>✌️</em><em>✌️</em><em>✌️</em><em>✌️</em><em>✌️</em>

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Experimenting with free fall, Mariana observes that her baseball takes 1.5 s to travel the last 30m before hitting the ground. F
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Answer:

37.8 m

Explanation:

At point 0, the ball is at height y₀.

At point 1, the ball is at height 30 m.

At point 2, the ball is at height 0 m.

Given:

y₁ = 30 m

y₂ = 0 m

v₀ = 0 m/s

a = -10 m/s²

t₂ − t₁ = 1.5 s

Find: y₀

Use constant acceleration equation.

y = y₀ + v₀ t + ½ at²

Evaluate at point 1.

y₁ = y₀ + v₀ t₁ + ½ at₁²

30 m = y₀ + (0 m/s) t₁ + ½ (-10 m/s²) t₁²

30 = y₀ − 5t₁²

Evaluate at point 2.

y₂ = y₀ + v₀ t₂ + ½ at₂²

0 m = y₀ + (0 m/s) t₂ + ½ (-10 m/s²) t₂²

0 = y₀ − 5t₂²

y₀ = 5t₂²

Substitute:

y₀ = 5 (1.5 + t₁)²

y₀ = 5 (2.25 + 3t₁ + t₁²)

y₀ = 11.25 + 15t₁ + 5t₁²

30 = 11.25 + 15t₁ + 5t₁² − 5t₁²

30 = 11.25 + 15t₁

t₁ = 1.25

30 = y₀ − 5t₁²

30 = y₀ − 5(1.25)²

y₀ ≈ 37.8

4 0
4 years ago
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