A community for students. Sign up today!
Here's the question you clicked on:
 0 viewing
Fosterthepeople
 2 years ago
help
Fosterthepeople
 2 years ago
help

This Question is Closed

Fosterthepeople
 2 years ago
Best ResponseYou've already chosen the best response.0A 1,200 kg car rolls down a hill with its brakes off and transmission in neutral. At one moment it is moving 5.0 m/s. A little later it is moving at 8.2 m/s. How much did its height change between the two times? Assume friction and air resistance have no effect on its motion. (Points : 1) 1.5 m 2.2 m 4.3 m 1.9 m

yunus
 2 years ago
Best ResponseYou've already chosen the best response.0the gravitational force cause the car accelerate. acceleration is almost constant and it is 9.8 m/sec^2. 5m/s 8.2m/s=3.2 m/s the change in velocity is 3.2 m/s. acceleration=(change in velocity)/time. 9.8=3.2/time time=0,326 sec. The distance car took in 0.326 sec. is y=5x0.326+0.5x9.8x0,106=>y=2.15 meters

yunus
 2 years ago
Best ResponseYou've already chosen the best response.0The tru answer is 2.2 (rounded 2.15 to 2.2)
Ask your own question
Ask a QuestionFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.