sorry the initial directon is southbilly_joule said:Look in your course notes and/or textbook for "Impulse".
As the question is, it can't be solved, we don't know the initial direction of the puck.
Hello kinghunter. Welcome to PF !kinghunter said:Homework Statement
Bob passes a 0.220kg puck with an initial velocity of 12m/s [South]to Dave. Dave one-times the puck with a force of 368N [N30E] if Daves stick is in contact with the puck for 0.250s what is the final velocity?
Homework Equations
i honestly don't know where to start with this one, if you can tell me what i first need to solve for i should be able to go from there
The Attempt at a Solution
For one thing your units are don't work out in several places, partly because you ignore placing parentheses adequately.kinghunter said:i believe the initial velocity when dave hits the puck is 12m/s (carried over from the initial pass), he hits it with a force of 368N [N30E], its in contact with his stick for 0.25s (acceleration period) and the mass of the puck is 0.22kg so what i did is F=ma and a=v/t F=m(vf-vi/t)
vf=F(t)+vi / m
=368N(0.25s)+12m/s / 0.22kg
but then i get an unrealistic number = 472.7m/s
To calculate the final velocity of a puck after it is hit, you will need to use the equation vf = vi + at. This equation takes into account the initial velocity (vi), the acceleration (a), and the time (t) the puck is in motion. Simply plug in the values for these variables and solve for vf to get the final velocity.
The initial velocity of a puck is the speed and direction at which it is traveling before it is hit. This can vary depending on the force and angle of the hit, as well as any other external factors such as friction or air resistance.
Acceleration plays a crucial role in determining the final velocity of a puck. The greater the acceleration, the faster the puck will travel and the higher its final velocity will be. However, if there is a negative acceleration (such as due to friction), the final velocity will be lower than if there was no acceleration at all.
Yes, it is possible for the final velocity of a puck to be greater than the initial velocity. This can occur if the puck is hit with a significant amount of force or if there is a substantial acceleration present. However, it is important to consider external factors such as friction, which can decrease the final velocity even if there is a strong initial force.
The longer the puck is in motion, the greater the final velocity will be. This is because the equation for final velocity (vf = vi + at) includes time as a variable, meaning the longer the puck is in motion, the more time there is for acceleration to affect the final velocity. However, other factors such as friction and air resistance can also affect the final velocity, so the time alone is not the only determining factor.