science
Grade-9
Easy

Question

An athlete running at a velocity of 5 m/s slows down to 2 m/s in 3 seconds. Her acceleration is ___ m/s2.

  1. 1 m/s2
  2. 1m/s2
  3. 2.3 m/s2
  4. 2 .3 m/s2
     
     

hintHint:

- 1 m/s²

The correct answer is: 1m/s2


    Initial velocity = 5 m/s
    Final velocity = 2 m/s
    Time taken = 3 s
    Acceleration = (v – u)/t
    = (2 – 5)/3
    =1 m/s2.

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