Directions: Read the following text to get a basic understanding of the kinematic equations and then answer the questions that follow. The kinematic equations are four equations that can predict unknown information about an object's motion if three of its four variables are known. The equations can be used when an object has either a constant velocity (acceleration = 0 m/s 2 ) or a constant acceleration. The equations of kinematics cannot be used in scenarios where the acceleration is changing. For example, the equations can be used to predict the displacement of a car over a certain time interval if its initial velocity and acceleration are known, but the equations will not be applicable if the car changed its acceleration during the time interval. Equations of Kinematics 푑 = 푣 푖 × 푡 + 1 2× 푎 × 푡 2 푣 푓 2 = 푣 푖 2 + 2 × 푎 × 푑 푣 푓 = 푣 푖 + 푎 × 푡 푑 = ( 푣 푖 +푣 푓 2 ) × 푡 푤ℎ푒푟푒, 푑 = 푑푖푠푝푙푎푐푒푚푒푛푡, 푣 푖= 푖푛푖푡푖푎푙 푣푒푙표푐푖푡푦, 푣 푓 = 푓푖푛푎푙 푣푒푙표푐푖푡푦, 푎 = 푎푐푐푒푙푒푟푎푡푖표푛,

Question

Directions: Read the following text to get a basic understanding of the kinematic equations and then answer the questions that follow. The kinematic equations are four equations that can predict unknown information about an object's motion if three of its four variables are known. The equations can be used when an object has either a constant velocity (acceleration = 0 m/s 2 ) or a constant acceleration. The equations of kinematics cannot be used in scenarios where the acceleration is changing. For example, the equations can be used to predict the displacement of a car over a certain time interval if its initial velocity and acceleration are known, but the equations will not be applicable if the car changed its acceleration during the time interval. Equations of Kinematics 푑 = 푣 푖 × 푡 + 1 2× 푎 × 푡 2 푣 푓 2 = 푣 푖 2 + 2 × 푎 × 푑 푣 푓 = 푣 푖 + 푎 × 푡 푑 = ( 푣 푖 +푣 푓 2 ) × 푡 푤ℎ푒푟푒, 푑 = 푑푖푠푝푙푎푐푒푚푒푛푡, 푣 푖= 푖푛푖푡푖푎푙 푣푒푙표푐푖푡푦, 푣 푓 = 푓푖푛푎푙 푣푒푙표푐푖푡푦, 푎 = 푎푐푐푒푙푒푟푎푡푖표푛,

When can the kinematic equations NOT be used? explain like a 8th grader

Answer 1

The kinematic equations cannot be used when the acceleration of an object is changing. This means that if the object is speeding up or slowing down during its motion, the equations can't predict its movement accurately. The equations can only be used when an object has a constant velocity (meaning it's not speeding up or slowing down) or a constant acceleration.

So, if you have a car that is changing its speed while you're trying to predict how far it will travel in a certain amount of time, you can't use the kinematic equations. But if the car is moving at a steady speed or accelerating at a consistent rate, then you can use the equations to figure out how far it will go.