Newton’s Third Law of Motion, Class 9 Science Sample Papers

1. There will be total 10 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying

1. A child on a cart with wheels throws a sandbag forward. As a result:

 He moves to the left.

 He moves backward.

  He moves forward.

  He moves to the right.

Question 1 of 10

2. When a fireman directs a powerful stream of water from a hose-pipe, the hose-pipe tends to go backward. This is due to:

  Law of Inertia.

 Newton’s 3^rd law.

 Law of conservation of charges.

  Law of conservation of energy.

Question 2 of 10

3. Which among the following is true as per Newton’s third law:

 Action and reaction forces are always equal and opposite.

 Action and reaction forces are always perpendicular.

 Action and reaction forces are always unequal.

 Action and reaction forces act in same direction.

Question 3 of 10

4. Action and reaction forces are always:

 Unequal and in opposite direction

 Unequal and in same direction.

 Equal and in same direction.

 Equal and in opposite direction

Question 4 of 10

5. A person standing on a weighing scale sees a reading on the scale as 148 pounds. This person is acted on by

  No forces at all.

  Two forces of equal magnitude acting in opposite directions.

 Only one force of 148 pounds, as shown by the reading on the scale.

 Only one force, of 296 pounds (= 2 × 148 pounds)

Question 5 of 10

6. An archer shoots an arrow. Consider the action force to be the bow string against the arrow. The reaction force is the:

 Arrow pushing against bow string.

 Air resistance against the bow.

 Weight of the arrow.

 Grip of the archer”s hand on the bow.

Question 6 of 10

7. Two spring balances pull each other in opposite directions. If the reading of one spring balance is 2 N, the reading shown by the second spring balance will be:

 2.5 N

 3.5 N

  3.0 N

 2.0 N

Question 7 of 10

8. Which one is correct if a bullet is fired from a rifle?

 There is no motion of bullet and rifle.

 Rifle moves in backward direction and bullet moves in forward direction.

 Bullet and rifle both move in backward direction.

 Bullet moves in backward direction and rifle moves in forward direction.

Question 8 of 10

9. Which is incorrect statement about action and reaction forces:

 They act on different objects.

 They are equal.

 They are opposite.

 They act on same object.

Question 9 of 10

10. A player is catching a ball. Consider the action force to be the impact of the ball against the player’s glove. What is the reaction force?

 Force that the glove exerts on the ball.

 The players grip on the ball.

 Friction of the ground.

 The muscular effort in the player’s arm.

Question 10 of 10

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