class 9 chapter 9 objective question

OBJECTIVE QUESTION 

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1. An object of mass 10 kg and velocity 10 m/s then momentum is 

    a. 100 kg m/s   b. 10 kg m/s   c. 15 kg m/s         d none of these

2. if mass of an object is 10 kg then force due to object is given acceleration  is 2m/ s²

      ^{a. 10 N                  B. 20 N               C. 30 N                       D 40} 

^{3. if mass an object 10 kg and initial velocity is 6 m/s and final velocity is 12 m/s  then after 5 s  what is momentum ?}

      ^{a. 30                      b . 40                  c. 60                            d. 12}

^{4. In above question also find force} 

     a. 30                      b . 40                  c. 60                            d. 12

5. what is tension ?

a. string force b. normal force c. electrostatic force d. none of these