Answer:
1. We experience that the vehicle speed is always changing and time will be increased when slow and decrease when increase speed.
2. The moving object has both velocity and speed. The scalar quantity speed is the distance traveled with respect to time. It shows how fast an object is moved. Instantaneous speed is the motion rate of object at a time period or moment. If we take an example of a cheetah who is running with speed of 80 miles per hour then it is his instantaneous speed because it is shown as in per hour speed.
