- #1
ahmed1237
- 4
- 0
Homework Statement
vi=35m/s (s 10 degrees w)
vf=30m/s (n 30 degrees w)
t=5.0x10^-3s
a=?
Do I add these vectors to get a resultant vector or do I subtract?
These variables represent the initial velocity (vi), final velocity (vf), time (t), and acceleration (a) in a vector problem. They are used to calculate the change in position or velocity of an object.
To solve for these variables, you will need to use the vector equations of motion, such as vf = vi + at and d = vit + 1/2at^2. Plug in the known values and solve for the unknown variable.
Sure, let's say a car is traveling at an initial velocity of 20 m/s and is accelerating at a rate of 5 m/s^2. If we want to find the final velocity after 4 seconds, we can use the equation vf = vi + at. Plugging in the values, we get vf = 20 m/s + (5 m/s^2)(4 s) = 40 m/s.
The units for vi and vf are typically in meters per second (m/s), the unit for time (t) is in seconds (s), and the unit for acceleration (a) is in meters per second squared (m/s^2).
One common mistake is forgetting to use the correct signs for the values. For example, if the acceleration is in the opposite direction of the initial velocity, it should be considered negative. Also, make sure to keep track of the units and use the correct equations for the given problem.