How can we take accelaration of a body in the upwards direction as positive? Since it is going against the gravity of the Earth must'nt it be taken as negative?

Open in App

Solution

It's all up to you whether to take upward direction as positive or negative.
Direction of acceleration is not fixed.
The only thing you need to do is to take a frame of reference and define the positive direction.Then everything along that direction will be positive and everything opposite to it will be negative.
This won't have any affect in numerical problem.

Suggest Corrections

Similar questions

Q. What will be the sign of accelertation due to gravity on a body near earth, when it is thrown vertically upwards? Take the upward direction as positive.

A body is projected vertically upward direction from the surface of earth. If upward direction is taken as positive, then acceleration of body during its upward and downward journey are respectively

Ans:- negative, negative

Please explain why is this so?????

Q. When a body is going upwards vertically the acceleration due to gravity is taken as

Q. Body is projected vertically with velocity

10

m/s on reaching the ground, change in its velocity is(upwards direction is taken as positive)

Q. In which all cases should we take gravitational acceleration 'g' as negative and where should we take it as positive?

Join BYJU'S Learning Program