# Motion Questions and Answers (Q&A) #### Wyatt Williams

The correct answer to the question “What is the magnitude of the displacement of the car from t=2.0 seconds to t = 4.0 seconds in the graph below?” wherein the graph “shows the velocity of a race car moving along a straight line as a function of time” is letter B or 20. m. Displacement is the area of curve bounded by time 2 seconds to 4 seconds and velocity of 20 m/s to 40 m/s.

To get the displacement, the formula that we have to use is this: ½ (4 seconds – 2 seconds) (40 m/s – 20 m/s). Now, using this formula, we can get the answer and it will show us that the displacement of car from t = 2.0 seconds to t = 4.0 seconds is 20m. Hope this answers the question. #### Wyatt Williams

Stays the same because its a straight line going at a constant rate #### Wyatt Williams

The answer is 3. The interval in which the cart is moving forward at constant speed is BC. This question has to do with graphine motion and time displacement. Graphing motion is very important in physics. Physics is the scientific study of matter and the way it moves throughout time and space.

Physics is important because it allows us to study and understand ourselves and our surroundings better. Physics can help us accurately estimate if a comet will hit the earth, how far a car will be able to stop, and even explain why gravity exists and how we can alter it. #### scienceguru

I understand that the SI unit of time is second and time is a fundamental quantity #### Wyatt Williams

The answer is A. According to the graph, the speed of the object during the time interval t = 2.0 seconds to t = 4.0 seconds is 10 m/s. Motion is a topic commonly talked about and explored in physics. Motion is when an object changes in position over a certain period of time.

The study of physics uses algorithms and math to predict motion and deceleration. Physics can mathematically measure motion with finding amounts for velocity, time, acceleration and many other measurements. Being able to measure motion is critical to understanding the universe. #### bilbojaggens

The answer is 60 not 20. there is a triangle above the rectangle that needs to be added to the 20m #### dhotz

This is letter C or 26 meters. Can you actually calculate the height of the place based on just dropping a stone? According to physics, this is possible. To do this, you would need a stopwatch so that you will be able to time when the stone hits the water.

Once you have all the right details, this formula can be used: Distance = 1/2 9.8 T^2. Take note that knowing the depth of the water can also be possible if this formula is used. Based on this, it will be safe to conclude the answer to this question is C. Some say that this formula is one of the easiest ways to know the distance in emergency situations. #### Wyatt Williams

In mathematics a type of graphing involves finding slope. The formula for slope can be said to be slope equals the second y coordinate minus the first y-coordinate over the second x-coordinate minus the first x-coordinate.

With this in mind, the slope of an object accelerating at a constant rate would look like a straight and horizontal line on an acceleration vs time graph. Because the acceleration is at a constant rate there would be no up and down sloping to record. Instead it would go straight along in straight line that does not show any deviation at all. #### jbucher

The export of heat from deep in the mantle to the top of the asthenosphere is thought to drive the lateral motions of earth’s lithospheric plates. In geology, mantle is a layer that is inside a terrestrial planet. These terrestrial planets include Venus, marks, Earth, and Mercury.

The earth’s mantle is a layer that lies between the outer core and the earth’s crust. The thickness of the earth’s mantle s estimated to be around 2886 kilometers. Even though it is solid, it behaves as a highly viscous fluid in terms of geological time. The mantle makes up around 15% of the entire volume of Earth. #### jagran josh

The car is a distance time graph which means that the gradient of the graph represents the speed. The steeper the gradient the faster the car. In this case, car B has the lowest gradient and is therefore, the least steep. This means that it has the slowest speed. Moreover, it also means that the rate of change of distance is lower.

Simply saying, the car with the least gradient will cover the least distance in the most time. The car with the steepest gradient will cover the most distance in the smallest time. These difference are plotted on the graph and are able to show the different scenarios at its best.  