If the magnitude of the velocity is constant the acceleration is zero. BA car running with a decreasing speed.
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The most appropriate answer is B.
. So your answer is B. The decreasing speed is called negative acceleration. Acceleration is negative when the velocity of the body decreases with timenegative acceleration is also called deceleration and the direction of the body is opposite.
A is acceleration attained by the body in this examle car. T is time in this example one minute. The car is moving but its rate of position increase is coming down.
Example-a car stopping in front of a red light. Negative acceleration and positive velocity means decreasing speed speed is moving towards zero. A particular direction is chosen as positive.
So negative acceleration means acceleration is in a negative direction as per the reference frame. Group of answer choices AThe velocity of a car increased from 40 kmh to 75 kmh over 15 minutes. As a result the car will experience negative acceleration which means its final velocity will be lower than its initial velocity even though the magnitude of acceleration will continue to be positive.
DA car running with an increasing speed. This negative acceleration can increase or decrease the speed of an object depending on the direction of object motion. AA car running at a constant speed.
During this time the car has no acceleration positive acceleration negative acceleration or constant velocity. Deceleration occurs when acceleration and velocity have opposite signs. What happens if an object has negative velocity and negative acceleration.
We know acceleration being a vector quantity has magnitude and direction both. The velocity of a car was 75 kmh over 4 hours. BThe velocity of a car was 45 kmh at 200 pm and at 400 pm the velocity of the car was 85 kmh.
For arguments sake let. 14Which of the following situation shows a positive acceleration. When the car slows down the speed decreases.
If the magnitude of the velocity is decreasing the acceleration is negative. Velocity has both speed and direction so anytime something changes direction like a car turning a corner at the same speed. In which situation is the acceleration of the car negative.
The cars rate of change of position is decreasing. To show this decrease mathematically we put a negative sign to indicate this. Negative acceleration and negative velocity means increasing speed.
In Cartesian coordinate system. In both cases the car is accelerating but one acceleration is positive and one is negative. Similarly assume a car is traveling in the right direction at.
For example a car is moving with velocity 10 ms-1 it stops due to some opposing force eg force of friction its velocity becomes 5andthen 3 after sometime its direction is now. The acceleration of this car is negative. A car moving in a particular direction that has the brakes applied will experience a negative acceleration in the direction the car is travelling.
As the velocity of car is decreased in one min from 50 to 35 so there must be deacceleration. Or say negative acceleration. Acceleration is the rate of change of velocity.
Describe a situation where an object has a changing velocity but a constant speed. CA car standing motionless on the track. While the direction opposite to that is negative.
Eddibear3a and 7 more users found this answer helpful. Answer 1 of 5. The car will eventually come to a brief stop and begin traveling backward.
It means that over time you are slowing down instead of speeding up- your velocity is continously decreasing. If the magnitude of the velocity is. Let us now assume that the velocity is in the direction that is designated as negative.
When a body undergoes retardation its acceleration is said to be negative because the velocity of the body decreases gradually. In which situation is the acceleration of the car negative. 2 Frame of reference.
An car average acceleration over a period of time is its change in velocity. If the speed is increasing the car has positive acceleration. This negative acceleration is actually called deceleration.
1 Slowing down. When a ball is thrown upwards it experiences a negative acceleration hope it. CThe velocity of a car was 75 kmh over 4 hours.
Acceleration can be negative when velocity is decreasing. Because velocity is reduced acceleration has negative sign. The acceleration of this car is 15 ms.
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