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BabaBlast [244]
3 years ago
5

A car of mass 750 kg has an initial speed of 75 mph. Traveling in a straight line, its speed is increased uniformly to 120 mph i

n 2.0 miles. What is the net force that was exerted?
Physics
1 answer:
mr_godi [17]3 years ago
6 0

Explanation:

ESTE PROBLEMA ES MEJOR HACERLO EN SI. PRIMERO CONVIERTES

LA VELOCIDAD INICIAL Y LA VELOCIDAD FINAL A m/s

v_{0} = 33.52 m/s      <em>v</em> = 53.67 m/s      <em>x</em> = 3220 m

PRIMERO ENCUENTRAS LA ACELERACIÓN DEL COCHE CON LA ECUACIÓN

DE GALILEO GALILEI

<em>a</em> = (53.67 m/s)^{2} - (33.52 m/s)^{2}/3220 m = 0.5453 m/s^{2}

AHORA CON LA ACELERACIÓN USMOS LA SEGUNDA LEY DE NEWTON

F = 75 kg(0.5453 m/s^{2}) = 40.9 N

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