science
Grade-11
Easy

Question

A 520kg rocket sled at rest is propelled along the ice by an engine developing a constant thrust of 12 000 N over a distance of 40 m.Assuming all of the work goes into motion, calculate its velocity after 40 m

  1. 7.5 m /s
  2. 6.98 m/s
  3. 43 m/s
  4. 48 m/s

The correct answer is: 43 m/s

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