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What does the slope of the tangent to the curve on a velocity-time graph measure?
The slope of the tangent to the curve on a velocity-time graph represents the acceleration of an object. Positive slope indicates acceleration in the positive direction, negative slope indicates acceleration in the negative direction, and zero slope indicates constant velocity.
How can you tell if acceleration is positive or negative?
Acceleration is positive when an object is speeding up in the positive direction (e.g., increasing velocity), and negative when the object is slowing down in the positive direction or moving in the negative direction (e.g., decreasing velocity). The sign of acceleration depends on the direction of the change in velocity relative to the direction of motion.
What is the acceleration if the velocity is 0?
It's not possible to tell from only that much information. When you throw a rock up, its acceleration is the acceleration of gravity from the moment it leaves your hand until it hits the ground. But its velocity is upward some time, downward some time, and zero at the top.
Is it possible to tell the difference between moving at a constant velocity and not moving at all?
Yes, it is possible. If you are moving at a constant velocity, you will feel no acceleration or deceleration. In contrast, if you are not moving at all, you will feel stationary with no change in velocity.
What does this tell you about the change in the velocity of the cart?
The positive slope of the velocity-time graph indicates that the cart is accelerating. The steeper the slope, the greater the acceleration. If the slope is negative, it indicates the cart is decelerating.
Which of newtons laws tell us that mass and acceleration are related?
I think its the first one force = mass * acceleration
What does the slope of the tangent to the curve on a velocity-time graph measure?
The slope of the tangent to the curve on a velocity-time graph represents the acceleration of an object. Positive slope indicates acceleration in the positive direction, negative slope indicates acceleration in the negative direction, and zero slope indicates constant velocity.
How can you tell if acceleration is positive or negative?
Acceleration is positive when an object is speeding up in the positive direction (e.g., increasing velocity), and negative when the object is slowing down in the positive direction or moving in the negative direction (e.g., decreasing velocity). The sign of acceleration depends on the direction of the change in velocity relative to the direction of motion.
What is the acceleration if the velocity is 0?
It's not possible to tell from only that much information. When you throw a rock up, its acceleration is the acceleration of gravity from the moment it leaves your hand until it hits the ground. But its velocity is upward some time, downward some time, and zero at the top.
What does a curved line on a distance versus time graph tell you?
It tells you that the velocity of the body is not constant. There is acceleration or deceleration.
Is it true that you find acceleration when initial velocity final velocity and time are given?
With that information, you can find the average magnitudeof the accelerationduring that period of time. You can't tell what either the magnitude or directionwere at any time during, only the average magnitude for the whole interval.
Is it possible to tell the difference between moving at a constant velocity and not moving at all?
Yes, it is possible. If you are moving at a constant velocity, you will feel no acceleration or deceleration. In contrast, if you are not moving at all, you will feel stationary with no change in velocity.
What does this tell you about the change in the velocity of the cart?
The positive slope of the velocity-time graph indicates that the cart is accelerating. The steeper the slope, the greater the acceleration. If the slope is negative, it indicates the cart is decelerating.
What is the acceleration of a skateboarder traveling 12m per sec?
Acceleration is independent of speed. If the instantaneous velocity of an object is 12m/s and no other information is known, it is impossible to tell the acceleration. However, if the velocity does not change at all over a certain time interval, the acceleration over that time interval is 0m/s2. If other information is given, such as initial/final velocity, time, or displacement, then one of the the "famous five" equations may be used to determine the acceleration.
Why does the shape of the free fall curve tell you about how an object moces when it is in free fall?
if its a velocity / time curve, it will show diminishing acceleration (slope of the curve) up to terminal velocity (forces balanced)
When force is proportional to mass and acceleration why do you say force is proportional to mass multiplied by acceleration why not mass plus acceleration and so on?
By definition, if two things are proportional to one and other, they are connected by a multiplying constant. If F = m + a you would simple say F is a bigger than m and it would also require that force, mass and acceleration all shared the same dimensions and units. Clearly mass is a scalar and force and acceleration are vectors, so that is not the case. Also, if they shared the same dimensions, they would effectively be the same thing so F = m + a would be the same as F(total) = F(1) + F(2) which wouldn't tell us very much about the laws of physics at all. Also, you don't say force is proportional to mass times acceleration (it's EQUAL to mass times acceleration). It's either force is proportional to mass (in which case acceleration is the factor of proportionality) or force is proportional to acceleration (in which case it is mass).
Can you tell an object has moved by its velocity?
Yes, the velocity of an object is a measure of its speed and direction of motion at a given time. Changes in velocity indicate that an object has moved and is experiencing acceleration or deceleration. By tracking changes in velocity over time, you can determine if an object has moved and how quickly it is moving.
