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DiKsa [7]
3 years ago
10

An object start from rest with a constant acceleration of 8.00 m/s^2 along straight line.

Physics
1 answer:
san4es73 [151]3 years ago
7 0
I’ll say c Bc it make more since to find the travel distance
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A 5.0-kg box has an acceleration of 2.0 m/s2 when it is pulled by a horizontal force across a surface with μK = 0.50. Find the w
Maslowich

Answer:a) 34.5 N; b) 24.5 N; c) 10 N; d) 1J

Explanation: In order to solve this problem we have to used the second Newton law given by:

∑F= m*a

F-f=m*a where f is the friction force (uk*Normal), from this we have

F= m*a+f=5 Kg*2 m/s^2+0.5*5Kg*9.8 m/s^2= 34.5 N

then f=uk*N=0.5*5Kg*9.8 m/s^2= 24.5N

the net Force = (34.5-24.5)N= 10 N

Finally the work done by the net force is equal to kinetic energy change so

W=∫Force net*dr= 10 N* 0.1 m= 1J

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A 241 kg mass is lifted 1.8 m. What is the potential energy of the mass (in J)?
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mass is lifted 1.8 m. What is the potential energy of the mass 4. A 100 kg

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1 example of a conductor and 1 example of a insulator in your EVERYDAY world.
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A gardener mows a lawn with an old-fashioned push mower. The handle of the mower makes an angle of 320 with the surface of the l
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Answer:

N = 337.96 N

Explanation:

∅ = 32º

F = 249 N

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N = ?

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⇒  F*Sin ∅ + m*g = N

⇒  N = (249 N*Sin32º) + (21 Kg*9.81 m/s²)

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