Lakhmir singh solutions
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Work And Energy | Exercise

Question 26

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?

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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.

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Our top 5% students will be awarded a special scholarship to Lido.

subject-cta

Question 26

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?

Looking to do well in your science exam ? Learn from an expert tutor. Book a free class!

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.

Our top 5% students will be awarded a special scholarship to Lido.

subject-cta
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