please please please solve the above question I know there is too much question but then also please help me.class9 chapter force and law of motion.
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Lete begin with no.15
a. To ever action there is an equal and opposite reaction
b. momentum is vector quantity unit is kgms
c. mass × velocity. Force = rate of change of momentum
d. equal reaction but in opposite direction
total momentum remains constant provided no external force acts
13. answer is 25×10N=250N
14. physical quantity is weight
12. is acceleration is 10÷5=2
10 is false
no. 1 is Force
no.2 is that the rate of change of momentum is directly proportional to the applied force and takes place in direction of force
3. is the unit of force is a netwon
that's what I have answered
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