forces

Question 1

what is a force

Answer 1

it is a push or pull that an object exerts on another

Question 2

effects of forces

Answer 2

an object can be moved. an object can be stopped.
an object’s shape can be changed.
an object’s size can can change
an objects speed can be affected.
an objects direction can be changed.

Question 3

types of forces

Answer 3

frictional force (friction)
air resistance
water resistance
elastic spring force
magnetic force
gravitational force (gravity)

Question 4

what is friction

Answer 4

a force that exist between surfaces rubbing against each other

Question 5

friction is affected by

Answer 5

mass of object
texture of surface

Question 6

advantages of friction

Answer 6

reduce slipping and falling
allows us to control movement
produce heat

Question 7

disadvantages of friction

Answer 7

wear and tear
overheat
things move slowly

Question 8

how to reduce friction

Answer 8

use lubricant
use ball berrings ,wheels and rollers
streamed body shape