17. Distinguish between uniform and non-uniform
motions, giving an example of each.
18. How do you determine the average speed of a
body in non-uniform motion ?
19. Define the term weight and state its S.I. unit.
Answers
17.Rectilinear motion has zero acceleration. Example of uniform motion: A body moving with a constant speed in a straight line has uniform motion. Non-uniform motion: When an object covers an unequal distance in equal interval of time, the motion is called non-uniform motion.
18.In a non-uniform motion, the average speed ofThe weight of an object is the force of gravity on the object and may be defined as the mass times the acceleration of gravity, w = mg. Since the weight is a force, its SI unit is the newton. Density is mass/volume. body is calculated by dividing the total distance travelled by the body, with the total time of its journey. Thus, Average speed = Total distance travelled by the body / Total time of journey
19.The weight of an object is the force of gravity on the object and may be defined as the mass times the acceleration of gravity, w = mg. Since the weight is a force, its SI unit is the newton. Density is mass/volume.
Explanation:
17. Distinguish between uniform and non-uniform
motions, giving an example of each.
18. How do you determine the average speed of a
body in non-uniform motion ?
19. Define the term weight and state its S.I. unit.
good morning have a great day ahead