Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
primary 6 | Science
3 Answers Below
Anyone can contribute an answer, even non-tutors.
Sry but pls help by today I have Prelim tmr
Date Posted: 4 years ago
Views: 512
See 3 Answers
2
Answer: 2
1 is false because the mass does affect the braking distance.
2 is true because , through the graph, we can infer that when the speed of the car is higher, the braking distance is higher.
3 is false. Kinetic energy is speed of an object. When the kinetic energy is lower, the braking distance is lesser.
4 is false. The braking distance converts kinetic energy into heat and sound energy. It is not the potential energy that is converted.
Thus, the answer is 2.
1 is false because the mass does affect the braking distance.
2 is true because , through the graph, we can infer that when the speed of the car is higher, the braking distance is higher.
3 is false. Kinetic energy is speed of an object. When the kinetic energy is lower, the braking distance is lesser.
4 is false. The braking distance converts kinetic energy into heat and sound energy. It is not the potential energy that is converted.
Thus, the answer is 2.
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Hi, I provide 1 to 1 tuition. $60/1.5h. I can cover English, Maths and Science. You may contact me via WhatsApp at 9033 8810. I am an ex-school teacher :)
Date Posted:
3 years ago
360 Tutoring Program