contestada

What is the mass of an object that needs a force of 6 600 N to increase its
speed from rest to 107 m/s in 2.3 seconds?

Respuesta :

Answer: 142 kg

Explanation: solution attached:

Use F= ma

Find acceleration first using

a= ∆v / t = vf - vi /t

= 107 m/s - 0 m/s / 2.3 s

= 46.5 m/s²

Derive F= ma to find m:

m = F /a

= 6600 N / 46.5 m/s²

= 142 kg

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