Transcript hadyeh kharmandar - Home Planet

Name :Hadyeh Kharmandar
• Newton first law is a restatement of
what gallop had already described and
Newton gave credit of gallop Newton
law of inertia was the first law which is
says an object in motion will stay in
motion , unless an outside force acts
upon it an object that is at rest will
stay at rest until an unbalanced force
refers to a set of forces which do not
have a zero sum (net forces zero)
Newton first law
• Next example consider a football at rest inside
an airplane on a runway from the perspective of
an observer with in the airplane the football will
appear to move backward at the plane
accelerates forward. This motion contradicts
Newton second law . Newton second law of
motion states that an object accelerates
because a force acts on it . The stronger the
force the greater the acceleration such as
throwing a football.
Newton second law
• Newton third law is reciprocal acting . To
every action there is always opposed an
equal reaction or the mutual actions .
Example if you press a football with your
finger the finger is also pressed by the stone.
Newton third law