2. Questions Bank
  3. 8th Class
  4. Science
  5. Force and Pressure

8th Class Science Force and Pressure Question Bank Force and Pressure

  • question_answer
    Twinkle throws a stone of mass 1 kg in vertically upward direction. Its velocity continuously decreases. After attaining a certain height its velocity becomes zero and it starts falling towards earth under gravitational force. If the acceleration due to gravity working on it is10 m/sec2. Then, how much force will it exert on ground, when it will strike to the ground?

    A) 10 N               

    B)          20 N

    C) N                    

    D) 100 N

    Correct Answer: A

    Solution :

        Since, F = ma Here, acceleration will be replace by acceleration due to gravity. \[F=mg\] \[F=1\times 10=10N\]


You need to login to perform this action.
You will be redirected in 3 sec spinner