2 years ago

What is the distance moved by a horse galloping at 75 km/h in 10.0 s?

Physics

1 answer:

skelet666 [1.2K]2 years ago

4 0

125Answer:

Explanation:uruhavdfh

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Lora (of mass 54 kg) is an expert skier. She

omeli [17]

The mechanical energy at top =Mechanical energy at bottom

Mass=m=54kg
Height=h=51m
Acceleration due to gravity=g=10m/s^2
Velocity=v=2.6m/s

$\\ \tt\longmapsto M_{initial}=M_{Final}$

Final energy at bottom=The kinetic energy

$\\ \tt\longmapsto KE=M_{initial}$

$\\ \tt\longmapsto KE=P.E_{(Top)}+K.E_{(Top)}$

$\\ \tt\longmapsto K.E=mgh+\dfrac{1}{2}mv^2$

$\\ \tt\longmapsto K.E=m\left(gh+\dfrac{v^2}{2}\right)$

$\\ \tt\longmapsto K.E=54\left((10)(51)+\dfrac{2.6^2}{2}\right)$

$\\ \tt\longmapsto K.E=54\left(510+\dfrac{6.76}{2}\right)$

$\\ \tt\longmapsto K .E=54(510+3.38)$

$\\ \tt\longmapsto K.E=54(513.38)$

$\\ \tt\longmapsto K.E=27722.52J$

$\\ \tt\longmapsto K.E=27.7KJ$

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2 years ago

A car has positive acceleration. What information can you infer from this? A- The car is changing direction. B- The car is speed

kvv77 [185]

Answer:

answe is b

Explanation:

A positive acceleration is defined as change of velocity upwards the direction that the object has taken. Therefore, a car having a positive acceleration means that the car is speeding up in the same direction as it traveling.

5 0

3 years ago

Read 2 more answers

please answer 1-3 and use a separate piece of paper thank you i've been trying those problems for 3 day.... ikr Sad

11Alexandr11 [23.1K]

$\frac{total distance}{ total time}$

$\frac{72m}{36s} = 2m/s$

Same thing for the rest
2) 5km/h
3)360km/h

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3 years ago

What is the equivalent resistance for a parallel circuit that has two resistors: 18.0 ohms and 23.5 ohms?

vovangra [49]

With only two resistors in parallel, it's relatively easy
to calculate their combined equivalent resistance.

   R = (their product) / (their sum)

   = (18Ω x 23.5Ω) / (18Ω + 23.5Ω)

   =         (423Ω²) / (41.5Ω)

   =    10.2 Ω

7 0

3 years ago

Convert 1 x 10-3 nm to m. given: 1 m = 1,000,000,000 nm

vampirchik [111]

Answer:

l m = 1000000000 nm

? = 0.001

= 0

5 0

3 years ago