Question

Uniform acceleration
 When the velocity of a body changes by
equal amounts in equal intervals of time,
acceleration is said to be uniform.
 Eg: A ball falling freely from a height
Non – uniform acceleration
 When the velocity of body changes by
unequal amounts in equal intervals of time,
acceleration is said to be non – uniform.
 Movement of car in busy street

Answer 1

Answer:

first option is correct

Explanation:

uniform acceleration can be defined as when the velocity changes by equal amounts in unequal intervals of time

Answer 2

Pick out the cause (from below) that enhances environmental degradation:(a) Planting of trees.(b) Prevention of factory wastes getting mixed up with river water.(c) Ban on use of plastic bags.(d) Allowing increase in the level of exhaust fumes emitted by cars, buses, trucks, etc.