 A train rolls to a stop along a horizontal track without the conductor applying the brakes. What answer choice BEST explains why this occurred? This graph represents the motion of a car while driving over a short distance. Which statement accurately describes the motion of the car in this graph? They walked faster and faster until they walked at a constant rate, then they walked slower and slower. John and Caroline go out for a drive one day. This graph represents the distance they traveled over time. The graph represents the distance a car travels over time while on the highway. Which statement about the car's trip is accurate? Consider the free body diagram. If the sum of the tension forces is equal to the force of gravity, which description BEST applies? The X-axis is labelled in seconds; the Y-axis is labelled in meters. Imagine that the moving object stops after 2. What would the line for that time interval look like on this graph? Sam and his Dad went grocery shopping. As they went up and down the aisle, adding items to their cart, something changed. The cart got heavier as they added groceries. As the cart became heavier, it also became harder to push. The image above shows two opposite forces acting on a rope. What can we say is true if the forces on each side of the rope is doubled to Newtons? The forces are balanced. The image above shows two opposite forces acting on a rolling cart, what can we say is true about the effect of the forces on the cart? Consider the data collected in science class. Different masses were thrown with varied amounts of force. Based on the data collected, what can we say about the objects acceleration? Consider the car driving around a circular track. Compare the driver's velocity with his acceleration in this case. The car is traveling at a constant rate of speed so it is not accelerating and the velocity does not change. Acceleration is the change in velocity so the car is experiencing a change in velocity and it is accelerating. The car is traveling at a constant rate of speed so it is not accelerating but the velocity changes because the direction the car travels is constantly changing. Consider the motion diagram. It illustrates a car's velocity V and acceleration A. Is there a change in either velocity or acceleration? Is there a change in both? The velocity is changing because the car is slowing down. The car is not accelerating; it would be decelerating.  