How long will it take a car to accelerate from 14.2 m/s to 24.5 m/s if the car has an average acceleration of 2.2 m/s^2 ?

1 Answer
Junaid Mirza
May 11, 2018

#"4.68 s"#

Explanation:

Use equation of motion

#"v = u + at"#

Where

  • #"v ="# Final velocity
  • #"u ="# Initial velocity
  • #"a ="# Acceleration
  • #"t ="# Time taken change velocity from #"u"# to #"v"#

#"t" = ("v"\ -\ "u")/"a" = "24.5 m/s – 14.2 m/s"/("2.2 m/s"^2) = "4.68 s"#

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