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Hardikph
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Member advised to use the homework template for posts in the homework sections of PF.
I tried but I can't.
Hardikph said:
First I used the formula dv/dt but I am used to have a ƒ(x) in the questions I usually did.Ray Vickson said:You must show your work. What have you tried?
Write dv/dt in terms of x and y, as defined in this question.Hardikph said:First I used the formula dv/dt but I am used to have a ƒ(x) in the questions I usually did.
rcgldr said:There's a conflict in the figure, t2 is stated as being 3.8, but shows as 4.0 in the figure.
I wasn't paying attention to the limited choices of possible answers, so the accuracy doesn't need to be that great. There's no information after t = 4.0, so what's being calculated is the average acceleration from t = 3.8 to t = 4.0, not the instantaneous acceleration at t = 4.0. Based on the graph and the data, the acceleration is decreasing with time, instantaneous acceleration at t = 4.0 would be less.CWatters said:It states the velocity at t=3.8 seconds is 130m/s and asks you to calculate the acceleration at t2=4.0 seconds. The graph gives you enough data to calculate the velocity at t2=4.0. So you have the velocities at two points a known time apart.
The accuracy might not be great but you can calculate an answer.
To calculate instantaneous acceleration, you need to use the formula a = (v2 - v1)/t, where v2 is the final velocity, v1 is the initial velocity, and t is the time interval. Simply plug in the values and solve for acceleration.
No, instantaneous acceleration cannot be calculated without knowing the velocity. It is a measure of the rate at which an object's velocity is changing over time.
No, instantaneous acceleration refers to the acceleration at a specific moment in time, while average acceleration refers to the overall change in velocity over a given time interval.
Instantaneous acceleration and instantaneous speed are two different measures. Instantaneous speed is the magnitude of an object's velocity at a specific moment, while instantaneous acceleration is the rate of change of that velocity at that specific moment.
A negative value for instantaneous acceleration means that the object is slowing down. This occurs when the final velocity is less than the initial velocity. It does not necessarily mean that the object is moving in the opposite direction, as it could still be moving in the same direction but at a decreasing speed.