Question

Exercise
(Use Cordova Smart Class Software on the smart board in class
SECTION - A
esponse
ral questions:
Name the five effects of force.
What is frictional force? Give two examples of frictional force
Define pressure. What is the Sl unit of pressure?
ience quiz:​

Answer 1

Answer:

define effect of force that force can change the shape size of the object it can also change the motion of the object frictional force is the opposing force which opposes the body examples of frictional force is when Football let's play on a ground the ball stops after going some distance because there is friction force between the ground and the ball pressure is something like external force act on any object SI unit of pressure is trust

Answer 2

Answer:

1. A force can move a stationary object.
2. A force can stop a moving object.
3. A force can change the speed of a moving object.
4. A force can change the direction of a moving object.
5. A force can change the shape and size of an object.

• A frictional force is created when the tip of the pen comes in contact with the surface of the paper for eg. writing with a ballpoint pen while sliding friction arises when one writes with a pencil.

• Pressure is the amount of force applied perpendicular to the surface of an object per unit area and the for it is p (or P). The SI unit for pressure is the pascal (Pa),