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3 years ago

13

A plan has a mass of 2000kg and is traveling 100 meters above the ground. What is the planes potential Energy

1 answer:

victus00 [196]3 years ago

6 0

Answer:

2000000j

Explanation:

m*g*h

2000*100*10

=2000000

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A car traveling at 20 m/s when the driver sees a child standing in the road. He takes 0.80 s to react, then steps on the brakes

mr Goodwill [35]

When driver see the child standing on road his speed is 20 m/s

So here at that instant his reaction time is 0.80 s

He will cover a total distance given by product of speed and time

$d_1 = v* t$

$d_1 = 20 * 0.8$

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now after this he will apply brakes with acceleration a = 7 m/s^2

so the distance covered before it stop is given by

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$0 - 20^2 = 2*(-7)*d_2$

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$d = d_1 + d_2$

$d = 16 + 28.6 = 44.6 m$

<em>so it will cover a total distance of 44.6 m</em>

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4 years ago

A student connects a small solar panel to a 40 a resistor to make a simple circuit. The solar panel produces a voltage of 2 0.

Nastasia [14]

<h3>Solution for the above question : -</h3>

Ohm's law states that :

$v = ir$

the terms used are :

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let's solve for electric current :

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3 years ago

A mechanic needs to replace the motor for a merry-go-round. The merry-go-round should accelerate from rest to 1.5 rad/s in 6.0s

pashok25 [27]

Answer:

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Explanation:

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$\omega_i$ = Initial angular velocity = 0

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