Question

SCIENCE

Chapter name :-Force and Pressure.

An archer stretches her bow while taking aim at the target. She then releases the arrow, which begins to move towards the target. Based on this information fill up the gaps in the following statements using the following terms:
muscular, contact, non-contact, gravity, friction, shape, attraction
(a) To stretch the bow, the archer applies a force that causes a change in its ______ .
(b) The force applied by the archer to stretch the bow is an example of ______ force.
(c) The type of force responsible for a change in the state of motion of the arrow is an example of a ______ force.
(d) While the arrow moves towards its target, the forces acting on it are due to _______ and that due to _____ of air.

Answer 1

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(a) shape

(b) muscular

(c) contact

(d) gravity and friction

Answer 2

Explanation:

(a) To stretch the bow, the archer applies a force that causes a change in its shape .

(b) The force applied by the archer to stretch the bow is an example of muscular force.

(c) The type of force responsible for a change in the state of motion of the arrow is an example of a contact force.

(d) While the arrow moves towards its target, the forces acting on it are due to gravity and that due to friction of air.

Additional Information:

Force is defined as push and pull of an object resulting in change in its position.

Or

Force is defined as the product of mass and acceleration

• It's S.I. unit is newton, denoted by N.

Pressure is defined as force per unit area.

• It's S.I. unit is pascal denoted by Pa.