A speed camera takes two photographs of a car.Photo 2 was taken 0.5 seconds after Photo 1.Marks on the road are 0.8 meters apart.Calculate the average speed of the car in m/s?

Question

7.2 m/s but when i submit answer i get 2 marks only not full 3 marks what am I doing wrong and what is the full answer?

Answer 1

r= 0.8m/0.5s = 1.6 m/s.

Answer 2

It does not work

Answer 3

Did you get this question on maths watch?

Answer 4

the answer is 14.4. got full marks.

Answer 5

How did you get 14.4?

Answer 6

yeah , how did u get 14.4 , and ye got this question on maths watch

Answer 7

to get 14.4 you need to times the 1.6 by 9.

Answer 8

Why are you timesing by 9

Answer 9

u can see that there are 9 marks in between the photo1 and photo2

Answer 10

14.4, full marks.

Answer 11

Where did u get 1.6 from?

Answer 12

r= 0.8m/0.5s = 1.6 m/s
7.2 m/s
14.4

Answer 13

In every problem solving, equations, algebra, ratio; you should think mathematically. first what you would do for this question is.
0.8/0.5 = 1.6m/s
Im not going to give the answers because there are many students who doesn't care in what method there doing therefore all you people reading my comment think carefully and reply when you really don't understand. THX

Answer 14

You need to times by 9 because that is how far the car went like :I c'mon its ez

Answer 15

that really helpful
14.4
i kept on getting 7.2 and getting 2 marks
thanks
by the way yes i did get it on mathswatch

Answer 16

thanks, everyone who answered the question

Answer 17

thanks for the answers guys

Answer 18

Thanks! I had gotten 1.6m/s at first and after looking for help, i realised where i went wrong. Thank you so much.

Answer 19

Wait, I need the working out may u help?

Answer 20

Tari beh ni pudi

Answer 21

Thx