(1) (i) 1.25 J (ii) –8.25 J
(2) (i) 100 J (ii) 8.75 J
(3) (i) 10 J (ii) –8.75 J
(4) (i) – 10 J (ii) –8.25 J
Solution: Answer (3)
wa = –8.75 J i.e. work done due to air resistance and work done due to gravity = 10 J
(1) (i) 1.25 J (ii) –8.25 J
(2) (i) 100 J (ii) 8.75 J
(3) (i) 10 J (ii) –8.75 J
(4) (i) – 10 J (ii) –8.25 J
Solution: Answer (3)
wa = –8.75 J i.e. work done due to air resistance and work done due to gravity = 10 J