Question

Worksheet 3
Choose the correct answer.
1. An example of a contact force is
a. magnetic
b. frictional
c. gravitational d. all of these
2. A force cannot change the
a. speed of an object b. mass of an object c shape of an object d. the direction of a
moving object
SI unit of pressure is
a. Pascal
b. Ampere
c. Newton
d. Watt
The force responsible for changing the state of motion of objects is called
a. Heat
b. Pressure
c. Friction
d. None of these
5. To stretch the bow, the archer applies a force that causes a change in its
a. Size
b. Direction
c. Shape
d. None of these
Malicu
State the type of force acting in the following conditions.
1. Lifting a school bag
2. Bullocks ploughing in the field
3. Attraction of paper bits towards a comb
4. Stopping a goal by a goal keeper
5. Coming downwards of the object even when it's thrown upwards​

Answer 1

Answer:

1) b. Frictional

2) b. Mass of the object

3) a. Pascal

4) d. None of these

5) c. Shape

6)

1. Contact

2. Contact

3. Non contact

4. Contact

5. Non contact

Hope this helps you.

Answer 2

Answer

B of Question no. 1 that is frictional force

B of Question no. 2 that is mass of object

SI unit of Pressure is Pascal

B Pressure not sure about it

B Shape