A boy throws a rubber ball vertically upwards What type of work positive or negative is done a by th...

Name: Lido Learning Solutions
Uploaded: 2022-01-05T06:16:12+00:00
Description: Lakhmir Singh Solutions - Physics- Class 9 Work And Energy Exercise solutions written by Lido's expert teachers

Question

A boy throws a rubber ball vertically upwards What type of work positive or negative is done a by the force applied by the boy b by the gravitational force of earth

Accepted Answer

a The force applied by the boy is a positive work as it is in the direction of motion of the body b The work done by the gravitational force of the earth is negative as it is against the direction of motion of the body

Lakhmir Singh Solutions Class 9 Physics Solutions for Exercise in Chapter 4 - Work And Energy