Q1:What is cause of motion?
Answer: Force
Q2:Which physical quantity is required change the speed or the direction of motion of an object.?
Answer: Force
Q3: Due to which reason an object dropped from a height falls towards the earth.?
Answer: Graviataional force
Q4: Due to which reason planets go around the Sun?
Answer:The sun's gravity pulls the planet toward the sun.
Q5:Why moon goes around the earth.?
Answer: Gravitational force
Q6:What is the direction of force that keeps a body moving along the circular path?
Answer: Towards the centre
Q7:A stone is tied up with string & rotating circular path in horizontal plane . What happens when string snapped ?
Answer: straight line along tangent to the circular path
Q8:What the name of force suggested by Newton for attraction between objects in universe ?
Answer: gravitational force.
Q9: What is name of scientist who determined the value of G (GRAVIATAIONAL CONSTANT)?
Answer: Henry Cavendish
Q10: What is the term used for an objects falling towards the earth due graviational force only ?
Answer: Free
Q11: What is the nature of acceleration to gravity of an object under free fall?
Answer: Constant and independent from mass of object
Q12: Two objects A & B are under free fall and mass of A is greater than mass of B ? What is ratio of their acceleration?
Answer: one
Q13: Theearth attracts every object with a certain force and this force depends on the mass (m) of the object and the acceleration due to the gravity (g). Is it True ?
Answer:Yes,True
Q14: The mass of an object remains the same everywhere. Is it true or false ?
Answer: true
Q15: Weight and force have not unit of measurement. Is is true or Flase ?
Answer: False
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