Class 9 Science Terminal Exams MCQ Solutions Class 9th Science Session 2022-23 9th Science Terminal Exam Based MCQ Extra Questions Class IX Science MCQ Extra Questions Answers

Class 9 Science Terminal Exams MCQ Solutions 9th Science Terminal Exam Based MCQ Extra Questions Class 9th Science Session 2022-23 Class IX Science MCQ Extra Questions Answers

Initial Velocity, u = 5 m/s Acceleration, a = 2 m/s² Time = t = 10 s Final velocity (v) = ? V = u + at V = 5 + 2 x 10 = 25 m/s

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, ...