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Question

Question

Mazda12345

S1 Science

Question post on Sat, 03/10/2020 9:42am

pls help me

Answer

mslimtuition · Answer 1 · Post on Tue, 20/10/2020 1:03pm

Let say the distance between the boy and mirror is 5m. The distance between the image and the boy is 10m. After 0.5s, the distance between the boy and image is 9m. The image is approaching the boy at 1m/s.

tzeshawn · Answer 2 · Post on Sun, 04/10/2020 12:10pm

(A)

The boy’s shadow doesn’t have its own speed, it is tagged to the boy so will have the same speed and will go along with him towards him.

Mazda12345 · Answer 3 · Post on Sun, 04/10/2020 5:47pm

Mazda12345 Post on Sun, 04/10/2020 5:47pm

the question means the speed of the boy’s reflection on the mirror not shadow haha

tzeshawn · Answer 4 · Post on Sun, 04/10/2020 8:27pm

tzeshawn Post on Sun, 04/10/2020 8:27pm

Still A

Mazda12345 · Answer 5 · Post on Sun, 11/10/2020 1:08pm

Mazda12345 Post on Sun, 11/10/2020 1:08pm

👺the ans is b

tzeshawn · Answer 6 · Post on Mon, 12/10/2020 9:31am

tzeshawn Post on Mon, 12/10/2020 9:31am

ok please let me learn what I have missed out.