A community for students.
Here's the question you clicked on:
 0 viewing
JeSuisDavid
 8 months ago
A projectile is launched from ground level at an angle of 35 degrees above the horizontal line (xaxis??) with an initial velocity of 65m/s. Determine the time when v=58m/s
JeSuisDavid
 8 months ago
A projectile is launched from ground level at an angle of 35 degrees above the horizontal line (xaxis??) with an initial velocity of 65m/s. Determine the time when v=58m/s

This Question is Closed

ProfBrainstorm
 8 months ago
Best ResponseYou've already chosen the best response.1Here's one way you could solve it  Firstly you need to consider the horizontal and vertical components of the velocity separately. The horizontal motion has no acceleration. The vertical motion has the acceleration due to gravity, g. Write down expressions for each component of the velocity as a function of time. Then you can use the expression \[v^2=v _{x}^2+v _{y}^2\] to get an equation relating v and t. You should end up with a quadratic equation for t.

Mashy
 8 months ago
Best ResponseYou've already chosen the best response.1and bonus question when u solve the quadratic equation.. you ll get two answers (both positive) ... can u think WHY you get two answers?? and bonus question 2 for one particular value of v.. the quadratic equation will be a perfect square and yield one answer only. Again can u think.. why would it be that? (also can u find what that v is and what that time is?) ;)
Ask your own question
Sign UpFind 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.