Question

C. Write true or false. Correct the false statements.
1. A force can increase the mass of an object.
2. Gravitational force is a non-contact force.
3. Objects having similar charges always attract each other.
4. Friction does not depend on the weight of the moving object.
5. Friction has no role in our walking or running.
6. Tyres of vehicles are provided with grooved designs to decrease friction.
7. Friction wears down the parts of machines.
8. Boats and ships have streamlined shapes.​

Answer 1

Answer:

1. False

2.true

3.False

4.False

5.False

6.False

7.True

Answer 2

Answer:

1.False.

STATEMENT:A force when applied to an object like gravitational force can increase its weight not is mass.

2.True.

3.False.

STATEMENT:why because the contract to the major attractive force among the two object with the opposite charges.It has two objects which are like will repelling each other.

4.True.

5.False.

STATEMENT:Friction help us with our walking or running.while walking or running we push the ground in backward direction then it is frictiona force between the ground and us,which helps us in moving forward.

6.False.

STATEMENT:Tires of vehicle are provided with ground design to increase friction.

7.True.

8.True.