Class 9

WORK AND ENERGY question bank (Science)

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Q1.

$A$ force of $7\, N$ acts on an object. The displacement is $8\, m$ in the direction of the force. What is the work done in this case (in $, J$)?

figure

(A)
$56$
(B)
$25$
(C)
$35$
(D)
$40$
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Q2.

When do we say that work is done?

(A)
When a force is applied to an object.
(B)
When an object moves without any force.
(C)
When a force is applied and the object undergoes displacement in the direction of the force.
(D)
When an object is at rest.
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