- #1
DeboPGH
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Homework Statement
When 2<=t<=6
v= 4/a in ft/sec2
v= 6 ft/sec @ t=2s
Find a at t=3s
Homework Equations
a=dv/dt.
The Attempt at a Solution
My integration is horribly wrong and honestly not worth typing. LOL
DeboPGH said:Homework Statement
When 2<=t<=6
v= 4/a in ft/sec2
v= 6 ft/sec @ t=2s
Find a at t=3s
Homework Equations
a=dv/dt.
The Attempt at a Solution
My integration is horribly wrong and honestly not worth typing. LOL
Spinnor said:You write,
v= 4/a in ft/sec^2
something is goofy here, something is not right?
Spinnor said:Now you have acceleration = 4/velocity what are the units of the 4
acceleration * time has units of velocity. Your expression a=4v^-1 still confuses me. Does the number 4 have units? I'm missing something that others might be missing as well.
Acceleration is the rate of change of velocity over time. It is a measure of how quickly the velocity of an object is changing.
Acceleration is calculated by dividing the change in velocity by the change in time. This can be represented by the formula a = (vf - vi) / t, where a is acceleration, vf is final velocity, vi is initial velocity, and t is time.
Velocity is a vector quantity that describes the speed and direction of an object, while acceleration is the rate of change of velocity. In other words, velocity tells us how fast an object is moving and in what direction, while acceleration tells us how quickly the velocity is changing.
Acceleration affects an object's motion by changing its velocity. If an object has a positive acceleration, it will speed up, while a negative acceleration will cause it to slow down. The direction of the acceleration will also affect the direction of the object's motion.
One example is a car accelerating from a stop sign. The velocity of the car increases as it accelerates. Another example is a ball thrown into the air. The velocity of the ball decreases as it reaches its highest point, representing a negative acceleration due to gravity.