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hodyreva [135]
2 years ago
14

A plane flying horizontally above earth’s surface at 100. Meters per second drops a crate. The crate strikes the ground 30. 0 se

conds later. What is the magnitude of the horizontal component of the crate’s velocity just before it strikes the ground? [neglect friction. ].
SAT
1 answer:
KIM [24]2 years ago
4 0

The magnitude of the horizontal component of the crate’s velocity just before it strikes the ground is 100 meters per seconds.

<u>Given the following data:</u>

  • Velocity = 100 m/s
  • Time = 30.0 seconds.

To determine the magnitude of the horizontal component of the crate’s velocity just before it strikes the ground:

<h3>The horizontal component of velocity.</h3>

In Projectile motion, the horizontal component of the velocity represents the influence of velocity in displacing an object (projectile) in the horizontal direction.

Mathematically, the horizontal component of velocity is given by the formula:

V_x = Vcos(\theta)

In this scenario, there isn't any acceleration in the horizontal direction and as such the net force in this horizontal direction is equal to zero (0) in accordance with Newton's Second Law of Motion.

In conclusion, the plane would experience a constant velocity of 100 m/s.

Read more on horizontal component here: brainly.com/question/4080400

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The current through the television is 3.5 A.

<h3>Electrical power</h3>

Electrical power P = IV where I = electric current and V = voltage.

Since we require the current through the television with a power of 0.8 kW which uses 230 V mains supply, we make I subject of the formula.

<h3>The current </h3>

So, I = P/V

Given that P = 0.8 kW = 800 W and V = 230 V,

substituting the values of the variables into the equation, we have

I = P/V

I = 800 W/230 V

I = 3.48 A

I ≅ 3.5 A

So, the current through the television is 3.5 A.

Learn more about electric current here:

brainly.com/question/15609964

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