3 years ago

This 200-kg horse ran the track at a speed of 5 m/s. What was the average kinetic energy?

Physics

1 answer:

MrRissso [65]3 years ago

5 0

Answer:

Explanation:

The average kinetic energy can be found by using the formula

$k = \frac{1}{2} m {v}^{2} \\$

m is the mass

v is the velocity

From the question we have

$k = \frac{1}{2} \times 200 \times {5}^{2} \\ = 100 \times 25$

We have the final answer is

Hope this helps you

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Three objects have velocities that vary with time

Solnce55 [7]

#21

initial velocity=u=5m/s
Time=t=2s
Acceleration=a=1.3m/s²

According to first equation of kinematics

v=u+at
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v=5+2.6
v=7.6m/s

#22

v1=2+3(3)=2+9=11m/s
v2=-8-4(3)=-20m/s
v3=1-5(3)=-14m/s

The order is

v2<V3<v1

for speed find absolute velocity

S1=|11|=11m/s
S2=|-20|=20m/s
S3=|-14|=14m/s

So order is

S1<S3<S2

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A power transmission line is hung from metal towers with glass insulators having a resistance of 1.00×109 Ω . What current flows

Hunter-Best [27]

Answer:

The current flows through the insulator is 2 mA.

Explanation:

Given that,

Resistance $R=1.00\times10^{9}\ \Omega$

Voltage = 200 kV

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Using ohm's law

$V=IR$

$I=\dfrac{V}{R}$

Where, I = current

V = voltage

R = resistance

Put the value into the formula

$I=\dfrac{200\times10^{3}}{1.00\times10^{9}}$

$I=0.0002\ A$

$I=2\ mA$

Hence, The current flows through the insulator is 2 mA.

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If a rocket was shot into outer space and never collided with any planets or asteroids, what would happen to the rocket once it

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Answer:

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