Normal Reaction

Q. Which of the following measures will make walking on ice easier?

1. Take longer steps
2. Take shorter steps
3. Try to jump
4. Try to jump or take longer steps.

Q. Magnitude of friction is ______ to the weight of the body.

1. equal
2. independent
3. inversely proportional
4. directly proportional

Q. In the given diagram, what are X and Y?

1. X is normal force and Y is frictional force.
2. X is frictional force and Y is normal force.
3. X and Y are normal forces.
4. X and Y are frictional forces.

Q. Assertion :When a person walks on a rough surface, the frictional force exerted by surface on the person is opposite to the direction of his motion. Reason: It is the force exerted by the road on the person that causes the motion.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Assertion is incorrect but Reason is correct

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Name the two kinds of force in nature.

Q. Force applied on a body cannot change the _______ of the moving body.

1. state
2. speed
3. direction
4. mass