Identify the type of acceleration in the following example. A) A moving vehicle Stops after some time. b) Speed of moving car is constant at 50 km /hr. c) The speed of moving bus in creases form 40km/hr to 60km/hr in 10 seconds.
Answers
Explanation:
A) negative acceleration or deacceleration
B) acceleration is zero
C) positive acceleration or acceleration
Answer:
A) negative acceleration or deacceleration
B) acceleration is zero
C) positive acceleration or acceleration
Explanation:
acceleration, the rate at which velocity changes with time, in both speed and direction. A point or object moving in a straight line accelerates if it speeds up or slows down. Motion in a circle accelerates even though the speed is constant because the direction is constantly changing. For all other types of movement, both effects contribute to acceleration.
Since acceleration has both magnitude and direction, it is a vector quantity. Velocity is also a vector quantity. Acceleration is defined as the change in the velocity vector in a time interval divided by the time interval. Instantaneous acceleration (at an exact moment and place) is given by the limit of the ratio of the change in velocity during a given time interval to the time interval when the time interval goes to zero (see analysis: Instantaneous rates of change).
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