Can an object that is moving rightward have a leftward acceleration?
FALSE – If an object is moving rightward and slowing down, then it would have a leftward acceleration. TRUE – If an object is speeding up, then the direction of the acceleration vector is in the direction which the object is moving.
What does the rightward velocity represent?
An object which is accelerating in the same direction as the velocity (both are rightward in this case) is speeding up. And so as you trace your eye from left to right across the diagram (rightward), the dots should be spaced further and further apart to indicate that the object is speeding up.
When a car’s velocity is positive and its acceleration is negative what is happening to the car’s motion?
Explanation: The car’s rate of change of position is decreasing. The car is moving but its rate of position increase is coming down. The car will eventually come to a brief stop and begin traveling backward.
What is the leftward velocity?
moving to the left and slowing down. a care w a leftward velocity and leftward acceleration is. moving to the left and speeding up.
Does negative acceleration mean slowing down?
An object with negative acceleration could be speeding up, and an object with positive acceleration could be slowing down. And if the acceleration points in the opposite direction of the velocity, the object will be slowing down.
Can an object accelerate if its velocity is constant?
The velocity vector is constant in magnitude but changing in direction. Because the speed is constant for such a motion, many students have the misconception that there is no acceleration. For this reason, it can be safely concluded that an object moving in a circle at constant speed is indeed accelerating.
What happens when acceleration is negative?
According to our principle, when an object is slowing down, the acceleration is in the opposite direction as the velocity. Thus, this object has a negative acceleration. When an object is speeding up, the acceleration is in the same direction as the velocity. Thus, this object also has a negative acceleration.
What does it mean when velocity is positive and acceleration is negative?
An object which moves in the positive direction has a positive velocity. If the object is slowing down then its acceleration vector is directed in the opposite direction as its motion (in this case, a negative acceleration).
What does negative velocity and negative acceleration mean?
Negative velocity = You move backwards. Negative acceleration = You slow down or you go faster in the backwards direction.
What is a car with leftward velocity and rightward acceleration is?
acceleration is positive. curved line. rightward velocity with leftward acceleration. velocity positive. acceleration is negative.
What does it mean when acceleration is to the left?
So to say that an object has a negative acceleration as in Examples C and D is to simply say that its acceleration is to the left or down (or in whatever direction has been defined as negative). An acceleration of -2 m/s/s is an acceleration with a magnitude of 2 m/s/s that is directed in the negative direction.
Is velocity negative when slowing down?
An object which moves in the negative direction has a negative velocity. If the object is slowing down then its acceleration vector is directed in the opposite direction as its motion (in this case, a positive acceleration).
When is acceleration the same as the direction of motion?
A general rule of thumbis that if an object is moving in a straight line and slowing down, then the direction of the acceleration is opposite the direction the object is moving. If the object is speeding up, the acceleration direction is the same as the direction of motion.
What happens to the velocity of an accelerating object?
Accelerating objects are changing their velocity. A velocity is a speed with a direction. An object with a changing velocity can be changing its speed (choice a) and/or changing its direction (choice
How is the rightward velocity depicted in kinematics?
rightward velocity, first decelerating from a high speed to a rest position, then maintaining the rest position, and finally accelerating at a lower rate than the initial deceleration. Answer: See diagram above; explanations are given below. a. A constant velocity is depicted by dots which are spaced the same distance apart.
How is acceleration represented on a V-T graph?
An object moving with a constant + velocity would be represented on a v-t graph by a horizontal line (slope = a = 0 m/s/s) located in the + velocity region. The slowing down to rest portion of the graph would be represented by a line which slopes downwards (- acceleration) towards the time axis. 33.