An athlete, initially at rest, takes 2 s to reach his maximum speed of `"36 km h"^(-1)`. The magnitude of his average accleration (in`ms^(-2)`) is

An athelete takes 2.0 s to reach his maximum speed of 18.0 km/h. What is the magnitude of his average acceleration?

An athelete takes 2.0 s to reach his maximum speed of 18.0 km/h. What is the magnitude of his average acceleration?

A boy takes 2 second to reach the maximum speed of 18 km/h from rest. What is the magnitude of his average acceleration ?

A man walks on a straight road from his home to a market 2.5 km away with a speed of 5 km h^-1 . Finding the market closed, he instantly turns and walks back home with a speed of 7.5 km h^-1 . What is the :- magnitude of average velocity, and

A man walks on a straight road from his home to a market 2.5 km away with a speed of 5 km. h^(-1) . Finding the market closed he instantly turns and walks back home with a speed of 7.5 km. h^(-1) . What is the (a) magnitude of average velocity and

A man walks on a straight road from his home to a market 2.5 km away with a speed of 5 km h ^-1 . Finding the market closed, he instantly turns and walks back home with a speed of 7.5 km h^-1 . What is the magnitude of average velocity.

A person covers half of his path at a speed of 30 "km.h"^(-1) and the remaining half at 40 "km.h"^(-1) . His average speed is