I want answer give reason of a,b,c,d and question number 6 also

I want answer give reason of a,b,c,d and question number 6 also b. on Nessuon•s - scientific on obJCC1 Kills freely to the ground. its acceleration is uniform. Even though the magnitudes of action Ibrce unci reaction iörce are equal ond their direction.s ore opposite. their do not get cancelled. c. It is easter to stop o tennis ball as compored to o cricket ball. when arc clhng With the same velocitv_ d. The veiocrty of an object at rest is to u.mtOrm. from your •erroundings e•plunution bused on Senton• of motion.

Dear Student , 

(A) The acceleration of freely fall body is due to gravity, so our Earth's gravity has a constant magnitude |ā| = g = 9.8 m/s2. So,  it is uniform.
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