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AnnyKZ [126]
3 years ago
9

A ball is kicked at a speed of 16m/s at 33° and it eventually returns to ground level further down field.

Physics
2 answers:
Dominik [7]3 years ago
6 0
  • Initial velocity=16m/s=u
  • Angle=33°
  • Acceleration due to gravity=9.8m/s^2=g

We have to find Range

\\ \bull\tt\dashrightarrow R=\dfrac{u^2sin(2\Theta)}{g}

\\ \bull\tt\dashrightarrow R=\dfrac{16^2sin(2\times 33)}{9.8}

\\ \bull\tt\dashrightarrow R=\dfrac{256sin66}{9.8}

\\ \bull\tt\dashrightarrow R=\dfrac{256(0.91)}{9.8}

\\ \bull\tt\dashrightarrow R=\dfrac{232.96}{9.8}

\\ \bull\tt\dashrightarrow R=23.77m

saw5 [17]3 years ago
4 0

Hi there!

We can begin by calculating the time taken to reach its highest point (when the vertical velocity = 0).

Remember to break the velocity into its vertical and horizontal components.

Thus:

0 = vi - at

0 = 16sin(33°) - 9.8(t)

9.8t = 16sin(33°)

t = .889 sec

Find the max height by plugging this time into the equation:

Δd = vit + 1/2at²

Δd = (16sin(33°))(.889) + 1/2(-9.8)(.889)²

Solve:

Δd = 7.747 - 3.873 = 3.8744 m

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Answer:

The answers and workings is in the Explanation section

Explanation:

<em>In a simple circuit a 6-volt dry cell pushes charge through a single lamp which has a resistance of 3 Ω. According to Ohms law the current through the circuit is _____________ Amps. </em>

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Since the third lamp is connected in series with the first and second, the total resistance will R₃ = 3 + 3 + 3 = 9Ω

total resistance of the 3 lamps R₃ =  9Ω

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Since all 3 lamps are connected in series, the same current will flow through each of the  3 lamps, and that current is I₃  

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Answer = 0.625 Amps

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