What is Velocity vs. time: Definition and 23 Discussions
The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. Velocity is equivalent to a specification of an object's speed and direction of motion (e.g. 60 km/h to the north). Velocity is a fundamental concept in kinematics, the branch of classical mechanics that describes the motion of bodies.
Velocity is a physical vector quantity; both magnitude and direction are needed to define it. The scalar absolute value (magnitude) of velocity is called speed, being a coherent derived unit whose quantity is measured in the SI (metric system) as metres per second (m/s or m⋅s−1). For example, "5 metres per second" is a scalar, whereas "5 metres per second east" is a vector. If there is a change in speed, direction or both, then the object has a changing velocity and is said to be undergoing an acceleration.
Please could I ask for help with the following question:
Part (a) is no problem. Acceleration is the gradient of the graph in regions OA and AB which gives 3 and 0.5
Part (b), I believe, requires me to calculate the greatest and least value of the gradient of the curve in region BC
Part...
Hi everyone. I just have a very quick question regarding position time graphs and velocity time graphs for a pendulum.
As we know, at the maximum displacement, the acceleration is at its maximum and the velocity is zero, and vice versa when the displacement is zero.
When we put this...
Homework Statement
So there are two rhinos chasing each other back and forth, Asha and her dad. What is Asha's total displacement at each point in increasing order(least to greatest)?[/B]
Asha's velocity is represented by II and her position at A:30, B:25, C:22, D:25, E:37. Homework...
The velocity versus time graph is the following:
http://imgur.com/kyebx8H
As the title asks, how would you find the maximum force on a velocity vs time graph given nothing but the graph and the mass of the object in question. My reasoning was that since f = ma and m is never changing, that...
Homework Statement
A rocketpowered hockey puck move along a horizontal frictionless table. The figure (link posted below) shows the graphs of vx and vy, the x and y components of the puck's velocity. The puck starts at the origin. How far from the origin is the puck at 4 seconds?
Here is...
How could you graph a potential energy vs. time graph only knowing the position vs. time graph and the velocity vs time graph for a hanging object oscillating up and down on a string?
[b]1. The problem statement
So I am currently working on an velocity/acceleration lab. My physics teacher requires each lab group to find an extension that goes above and beyond the question that we are supposed to answer with the lab. Each group also needs evidence to prove the extension...
We are given a velocity vs. time graph. It starts at 15 m/s at t=0 and goes to 10m/s at t=4
then it goes from 10m/s at t=4 to 15m/s at t=10 and we are told to find the postion after t=10
I first found the slope of the first segment which was 6.25. so I did ∫6.25t+15 dt from 0 to 4 and...
And visa versa. And I'm only in 9th grade, so please don't give me any complicated answers or links. I just want to know simple stuff like, "If there is a straight horizontal line in a velocity vs. time graph, how would that look like on a position vs. time graph?" Basically, I just want to know...
i am trying to do my physics lab tutorial homework and i am confused about a question that asks..
bill got his distance and acceleration graph right but drew the incorrect velocity vs. time graph shown here.
velocity

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Hello all. I have been struggling with this for a bit. I will present it as generally as I can.
Say I have an object with an initial velocity v0. It is only acted upon by an acceleration function, a(v), which is a function of v. How can I find a function for v(t)? Does this require a...
Homework Statement
1) Time = 0 to 2.5s
a. What is the velocity during this time?
b. Determine the displacement traveled during this time.
c. What is the acceleration during this time?
2) Time = 5.5 to 10s
a. What is the velocity during this time?
b. Determine the...
This is my first college physics class and I am feeling a little challenged, since it is the start and all. I took physics in high school and am a bit rusty. I appreciate any help.
Homework Statement
The vertical component of the velocity of a bouncing ball is shown in the graph below (graph...
Homework Statement
The graph is:
http://i995.photobucket.com/albums/af79/huybinhs/Lastproblem.gif
A particle moves along the xaxis. The velocity of this particle as a function of time is shown in the figure. Assume the particle is located at x = 0 m at time t = 0 s.
1. What is the...
Homework Statement
A sportscar, Fiasco I, can accelerate uniformly to 68 m/s in 30 s. Its maximum braking rate cannot exceed 0.75g. What is the minimum time required to go 1300 m, assuming the car begins and ends at rest?
(Hint: A graph of velocity vs. time can be helpful.) Homework Equations...
This has been bothering me.
As you will know, when something reaches the speed of light, its speed in time slows down. So I have been wondering, if we were to develope intersteller light speed travel and could move at the speed of light we would reach proximus Centuri in 4.3 years. But...
Homework Statement
If given a velocity vs. time graph where max. constant velocity is 2m/s for 2s and the object turns around at 4s with max negative constant velocity is 2m/s for 2s. How do i find the greatest distance from the origin?
Homework Equations
d= vi+vf/2 *t
d=vit +...
Firsttime poster here.
Homework Statement
A little cat, Bella, walks in a straight line, which we shall call the x axis, with the positive direction to the right. As an observant scientist, you make measurements of her motion and construct a graph of the little feline's velocity as a...
Very tricky velocity vs. time graph
Homework Statement
Doing a very basic lab on force and motion and ran into a snag with a graph. It's a very wildly changing acceleration graph, and I'm unsure how to proceed with the matching velocity graph. I know that a curved acceleration graph would...
On a graph such as below:
http://www.gcsescience.com/VelocityTimeGraphRocket.gif
Would the graph of resultant force vs. time be of a shape similar to the curve of "y=1/x" in the positive quadrant? I make this assumption, since the gradient of the v vs. t graph is decreasing, therefore...
the xaxis is in minutes, the yaxis is in m/min.
I know that the acceleration = the slope.
should my final answer be in m/min^2 ?
or should acceleration always be in m/s^2 ?
or does it not matter? :confused:
thanks :smile: