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Vanyuwa [196]
3 years ago
15

Plz help plz i'll give brainlist Sorry for the subject btw

Physics
2 answers:
Andre45 [30]3 years ago
8 0

Answer:the top one will be have tons of energy going down the hill the midlle will have energy going backwards and the bottom will have energy in the arms

Irina-Kira [14]3 years ago
3 0

Answer:

Potential energy is at its maximum value for all 3 images.

Explanation:

Mechanical energy equals kinetic energy plus potential energy. There is zero kinetic energy because the object isn't moving, so mechanical must equal potential. Additionally, all 3 objects are at their highest height and potential equals mgh, so the maximum height gives the maximum potential energy.

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Answer:8.75 s,

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Explanation:

Given

Initial velocity=70 mph\approx 31.29 m/s

velocity after 5 s is 30 mph\approx 13.41 m/s

Therefore acceleration during these 5 s

a=\frac{v-u}{t}

a=\frac{13.41-31.29}{5}=-3.576 m/s^2

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t=\frac{31.29}{3.576}=8.75 s

(b)total distance traveled before stoppage

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3 0
3 years ago
Which of these events indicate that a chemical reaction might have occurred?
blagie [28]
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A cylindrical tungsten filament 14.0 cmcm long with a diameter of 1.00 mmmm is to be used in a machine for which the temperature
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