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Mekhanik [1.2K]
3 years ago
11

21. An object is moving at 5 m/s and a height of 4 m. If the object has a mass of 5 kg what is

Physics
1 answer:
Stels [109]3 years ago
6 0

Answer: 258.7 J

Explanation:

Velocity of object V=5m/s

Mass ; 5kg

Height; h=4m

Mechanical energy is equal to sum of kinetic and potential energy

E=K+Ep

Kinetic energy is calculeted using; K=m*V²/2

Potential energy is calculated using : Ep=m*G*h

-------------------------------------------------------------------------

V=5m/s

m=5kg

h=4m

E=K+Ep

E=m*V²/2+m*G*h

E=5kg*(5m/s)²/2+5kg*9.81m/s²*4m

E=62.5J+196.2J

E=258.7 J

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A racecar accelerates from rest at 6.5 m/s2 for 4.1 s. How fast will it be going at the end of that time?
Pie

Answer:

The final velocity of the car is 26.65 m/s.

Explanation:

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Consider the accuracy of recording muscle electrical activity using electrodes placed on the skin surface, compared to directly
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