EVERYDAY SCIENCE

Detailed explanation-1: -Acceleration is a change in velocity, either in its magnitude-i.e., speed-or in its direction, or both. In uniform circular motion, the direction of the velocity changes constantly, so there is always an associated acceleration, even though the speed might be constant.

Detailed explanation-2: -The car experiences a centripetal force as it turns the corner as a result of friction. This in turn causes a centripetal acceleration, which causes the direction of the velocity to change.

Detailed explanation-3: -The car is accelerating because it is change direction as it goes around the curve. The car has a constant velocity because nothing about the cars motion is changing.

Detailed explanation-4: -Explanation: If an object is moving with constant velocity, then its acceleration must be zero. We can then look at Newton’s second law. If the acceleration is zero, then the net force must also be zero.

Detailed explanation-5: -An object’s acceleration is the rate its velocity (speed and direction) changes. Therefore, an object can accelerate even if its speed is constant-if its direction changes. If an object’s velocity is constant, however, its acceleration will be zero.