Question

IV. True or False
State whether the given statements are true or false.
1. Force applied on an object in opposite directions add to one another.
2. Pressure does not depend on area of contact.
3. A force can change the state of motion of an object.
4. Force cannot change the speed of an object.
5. Atmospheric pressure is less at higher altitudes.
6. Force of gravity is a contact force.
7. Muscular force is also known as contact force.
8. Pascal is the unit of force.
9. To move an object faster it has to be pushed or pulled repeatedly.
10. Magnitude is the strength of force.
11. Force can change the shape of an object.
12. At least two objects must interact for a force to come into play.
13. Magnetic force is a non-contact force.
14. An apple from a tree falls on the ground due to the force of gravity.
15. Newton is the unit of force.

Answer 1

Answer:

The answer to this question is

1.False

2.False

3.True

4.False

5.True

6.False

7.True

8.False

9.False

10.True

11.True

12.True

13.True

14.True

15.True

I HOPE IT WILL HELP YOU

Answer 2

1. True

Reason - Recall that in the tug-of-war when two teams pull equally hard, the rope does not move in any direction.

2. False

Reason - Pressure is indirectly proportional to the area of contact. Greater is the area in contact lesser is the pressure.

3. True

Reason - for example kicking a football, or stopping a football from moving.

4. False

Reason - When a force is applied on an object, it may change its speed. If the applied force is in the direction of motion, the speed of the object increases. If the force is applied in the direction opposite to the motion, then it results in a decrease in the speed of the object.

5. True

Reason - At higher elevations, there are fewer air molecules above a given surface than a similar surface at lower levels.

6. False

Reason - Gravity is a non contact force as it is not necessary that the bodies should be in contact.

7. True

Reason - As muscles are in the direct contact with the object on which force os applied.

8. False

Reason - Pascal is the SI unit of pressure.

9. Flase

Reason - Object has to pushed in the same direction.

10. True

Reason - Magnitude of force is expressed in SI unit of force called Newton

11. True

Reason - Force can change the shape of object by bending, streching and compression.

12. True

Reason - Because force is applied on two bodies or objects.

13. True

Reason - magnetic force is a non contact force as they push or pull objects without touching them.

14. True

Reason - Gravity is a natural phenomenon in which everything which possess mass are attracted to each other.

15. True

Reason - SI unit of force is Newton.