A particle accelerates from rest at 7.5 m/s 2 . What is its speed 6.4 s after the particle starts moving? Answer in units of m/s.

1 Answer
Junaid Mirza
Nov 28, 2017

#"48 m/s"#

Explanation:

Use this equation

#v = u + at#

Where

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

#v = "0 m/s" + ("7.5 m/s"^2 × "6.4 s") = "48 m/s"#

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