EVERYDAY SCIENCE

Detailed explanation-1: -Acceleration occurs anytime an object’s speed increases or decreases, or it changes direction. If the speed of the body is increasing, the body has positive acceleration. If the speed of the body is decreasing, the body has negative acceleration. Therefore when the body is accelerated Its speed may or may not change.

Detailed explanation-2: -Newton’s second law says that when a constant force acts on a massive body, it causes it to accelerate, i.e., to change its velocity, at a constant rate. In the simplest case, a force applied to an object at rest causes it to accelerate in the direction of the force.