|Sep27-06, 04:57 PM||#1|
Projectile Motion Problem
8. A Physics student on Planet Exidor throws a ball, and it follows the parabolic trajectory shown in Figure 6.8 (whille it will not be recreated on this forum, the figure shows a part of a parabolic curve which starts at the origin and peaks at t=2. It also shows the velocity vector at t=1, which will be entered later in the pst). The ball's position is shown at 1 s intervals until t=3s. At t=1 s, the ball's velocity is (2.0i + 2.0j)m/s, where i and j are unit vectors.
a. determine the ball's velocity at t=0,2,and 3 s.
b. what is the value of g on planet Exidor?
c. what was the ball's launch angle.
I know how to do parts b and c, but can't do either without a. I'm not sure what formula to use, but I do know the following:
v1=(2.0i + 2.0j)m/s
Thank you in advance.
|Sep27-06, 05:04 PM||#2|
Blog Entries: 1
Treat the vertical and horizontal components separately. Hints: What's the vertical component of velocity at the highest point? (t = 2) What about the horizontal component?
|Sep27-06, 05:21 PM||#3|
Figured it out. since the velocity in the y direction is 0m/s at t=2s, I was able to calculate the gravity. I then used this to find the velocities at the other times. I don't know if using part b to solve part a is correct, but I can check my instructor's webpage to see if it gets the correct answer.
|Similar Threads for: Projectile Motion Problem|
|Projectile Motion Problem||Introductory Physics Homework||3|
|Projectile Motion Problem||Introductory Physics Homework||4|
|Projectile Motion + Linear Motion = Problem||Introductory Physics Homework||3|
|Uniform Circualr Motion with Projectile Motion problem (Extremely confusing):||Introductory Physics Homework||4|