Does the sign of the acceleration alone tell you whether an object is speeding up or slowing down?

Does the sign of the acceleration alone tell you whether an object is speeding up or slowing down?

Another way to say this is that if the acceleration has the same sign as the velocity, the object will be speeding up. And if the acceleration has the opposite sign as the velocity, the object will be slowing down.

Can an object that is momentarily at rest be accelerating?

Yes, acceleration is a change in velocity, so an object might be momentarily at rest but a split-second later have some speed, i.e. it can be changing its velocity even if it is momentarily at rest. An example is a vertically thrown ball at the top of its trajectory, or a yo-yo just as it turns around.

Can an object have constant speed and still be accelerating give an example?

Yes, a body can have a constant speed and still be accelerating. For example you revolve a stone connected by a string in a circular motion. You will notice the stone rotates with a constant speed and yet have a centripetal acceleration which is directed towards the centre of the circle.

Can an object at rest have an acceleration give an example if your answer is yes?

Hello yaar, Yes, a body can have acceleration while at rest. For Example:- i)The best example for this is acceleration due to gravity(g). It acts on a body even if the body has no velocity.

Can a body have zero velocity and still acceleration give examples?

Yes, a body with a velocity 0 can still accelerate. The simplest example is a body which is thrown up. At the peak point its velocity becomes 0 but still accelerates due to gravity. Hope it helps!!

Can a body have zero velocity and finite acceleration justify?

This acceleration is the gravitational acceleration. At that point the component of acceleration/gravitational acceleration works there. So, at the topmost point the velocity is zero but acceleration is not and has a finite value. Therefore, a body can have zero velocity and finite acceleration.

Is it possible for a body to be accelerated?

Yes, it is possible for a body to accelerate, without changing the speed. Bodies in circular motion are continuously accelerating. Even if they don’t change their speed, their velocity is constantly changing due to continuous change in direction of motion.

Which of the following has zero velocity?

The state of motion of an object is defined by its velocity – the speed with a direction. Thus, inertia could be redefined as follows: Inertia: tendency of an object to resist changes in its velocity. An object at rest has zero velocity – and (in the absence of an unbalanced force) will remain with a zero velocity.

Can a body have zero velocity and finite?

Yes, a body can have zero velocity but finite acceleration.

How can you calculate the distance Travelled on a velocity-time graph?

Calculating the distance travelled

1. Calculate the total distance travelled by the object – its motion is represented by the velocity-time graph below.
2. Here, the distance travelled can be found by calculating the total area of the shaded sections below the line.
3. ½ × base × height.
4. ½ × 4 × 8 = 16 m 2
5. (10 – 4) × 8 = 48 m 2

What do you suppose the area between the line and the time axis on a velocity-Time plot represents?

Normally, velocity is plotted on the y-axis (the vertical axis) and time is plotted on the x-axis (the horizontal axis). The area under the line on a velocity-time graph is equal to the displacement of the object.

What does the slope of a distance versus time graph represent?

The slope of a distance-time graph represents speed. The steeper the slope is, the faster the speed. Average speed can be calculated from a distance-time graph as the change in distance divided by the corresponding change in time.

What does the slope represent in a speed time graph?

A sloping line on a speed-time graph represents an acceleration . The sloping line shows that the speed of the object is changing. The object is either speeding up or slowing down. If the line slopes upward from left to right, this means the object is speeding up.

What does a slope of zero on a distance versus time graph show?

If the acceleration is zero, then the slope is zero (i.e., a horizontal line). The slope of a velocity-time graph reveals information about an object’s acceleration.

What does the slope of a time graph represent?

The slope of a position graph represents the velocity of the object. So the value of the slope at a particular time represents the velocity of the object at that instant.

What is the slope of a position vs time graph equal to?

The principle is that the slope of the line on a position-time graph is equal to the velocity of the object. If the object is moving with a velocity of +4 m/s, then the slope of the line will be +4 m/s. If the object is moving with a velocity of -8 m/s, then the slope of the line will be -8 m/s.

What does the slope of the line tell you about the acceleration of the ball?

Answer: The line on the velocity-time graph was a curved one since the velocity was decreasing as time increased. The slope has a negative value of -0.03. This slope represents the average acceleration of the ball.

What is the physical significance of the slope?

So having a slope refers to a surface that is not level and allows gravity to move an object in the direction of gravity’s pull, which on the surface of the earth, is known as down. The physical interpretation of mathematical slope is similar. A slope of zero is equivalent to level – no marble movement.

What is the physical significance of the slope in Exercise 1?

What is the physical significance of the slope in Exercise 1? Ii*wi = If*wf => wi = (If/Ii)*wf If/Ii = slope; y = m*x + bThe slope serves as a transmission coefficient; it tells us what amount of angular frequency is left after collision.

What does slope do to area?

The gradient of the area function(As in the area bounded by this graph and the x axis) is the height of this line. So if the line is y=4 then the area under this grows at a rate of 4 per x. It is the same idea for any function. The height of that function represents the gradient of the area function.

What is the physical meaning of the slope of the current voltage graph?

A resistor is ‘Ohmic’ if as voltage across the resistor is increased, a graph of voltage versus current shows a straight line (indicating a constant resistance). The slope of the line is the value of the resistance.

What is the slope of current vs voltage?

The relationship between voltage and current is Ohm’s Law, and the slope of the line from a graph of the two is the value of the resistance in the circuit. The Ohm’s Law equation can be represented in three ways: R = V / I (resistance = voltage divided by current) V = I x R (voltage = current x resistance)