Register to reply

Kinematics (linear motion)

by Scarlet_pat
Tags: kinematics, linear, motion
Share this thread:
Scarlet_pat
#1
Sep18-11, 09:14 PM
P: 44
1. The problem statement, all variables and given/known data
A puck is moving on an air hockey table. Relative to an x, y coordinate system at time t = 0 s, the x components of the puck's initial velocity and acceleration are v0x = +5.6 m/s and ax = +6.3 m/s2. The y components of the puck's initial velocity and acceleration are v0y = +9.8 m/s and ay = -3.6 m/s2. Find (a) the magnitude v and (b) the direction θ of the puck's velocity at a time of t = 0.50 s. Specify the direction relative to the +x axis.


2. Relevant equations
v= u +at
v^2 = U^2 + 2as
s = ut +1/2at^2
s = vt +1/2at^2


3. The attempt at a solution

i dont know how to approach this, in fact i dont even know if im using the right equations. since there are X and Y component. it would be incorrect for me to find V by only using X or V ... please help.
Phys.Org News Partner Science news on Phys.org
Bees able to spot which flowers offer best rewards before landing
Classic Lewis Carroll character inspires new ecological model
When cooperation counts: Researchers find sperm benefit from grouping together in mice
mateomy
#2
Sep18-11, 09:21 PM
P: 307
If you solve the final velocities for each individual component of the puck's movement you will get two vectors. Using vector additions you can get a resultant….from there you should be able to find the angle relative to the x-axis.


Register to reply

Related Discussions
Kinematics question (uniformly accelerated linear motion) Introductory Physics Homework 7
Linear Kinematics problem Introductory Physics Homework 3
Linear and Rotational Kinematics System. Introductory Physics Homework 5
Linear Velocity at Top (Rotational Kinematics) Introductory Physics Homework 1
Relating linear and angular kinematics Introductory Physics Homework 1