AP EAMCET · PHYSICS · Motion In One Dimension
When will a body of mass moving at subjected to a retarding force of , come to rest?
- A
- B
- C
- D
Answer & Solution
Correct Answer
(A)
Step-by-step Solution
Detailed explanation
Given that Retarding force F=100 N Initial velocity u=15 m s-1 Mass m=20 kg From newton's second law F=ma ⇒a=Fm=10020=5 m s-2 From equation of motion v=u+at ⇒0=15-5t ⇒t=3 s
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