Velocity time graph for a moving object is curved line, this means that object is moving with non-uniform accelerated motion. Therefore, body is moving with variable acceleration.

Given, u = 54 km/h = 54 x 5/18 m/s = 15 m/s V = 0 and t = 5 s. Retardation, a = v – u/t = 0 – 15/5 = – 3 m/s ² Avg retardation force, ...

Columnar epithelium consists of column-like cells with their nucleus towards the base. They line the stomach, small intestine, and colon, forming a mucous membrane. Their main functions are absorption (eg, stomach, intestine) and secretion (eg, mucosa by goblet cells). Stratified ...

Class IX Science MCQ Extra Questions Answers Class 9th Science Session 2021-22 Class 9 Science Terminal Exams MCQ Solutions 9th Science Terminal Exam Based MCQ Extra Questions

Class 9th Science Session 2021-22 Class 9 Science Terminal Exams MCQ Solutions Class IX Science MCQ Extra Questions Answers 9th Science Terminal Exam Based MCQ Extra Questions