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A 2,000 kg car, initially traveling at a speed of 15 m/s, is accelerated by a constant force of 10,000 N for 3 seconds. The new speed of the car is

Respuesta :

  • Mass (m) = 2000 Kg
  • Initial velocity (u) = 15 m/s
  • Force (F) = 10000 N
  • Time (t) = 3 s
  • Let the acceleration be a.
  • We know, F = ma,
  • Therefore, 10000 N = 2000 Kg × a
  • or, a = 10000 N ÷ 2000 Kg = 5 m/s^2
  • Let the final velocity be v.
  • By using the equation of motion, v = u + at, we get
  • v = 15 m/s + 5 m/s^2 × 3 s
  • or, v = 15 m/s + 15 m/s = 30 m/s

Answer:

The new speed of the car is 30 m/s.

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