Download Newton`s Second Law

Name:______________________________ Section: _____________ Date: ____/____/______
13-5: What is Newton’s Second Law of Motion?-M
Pages 282-283
Objective:
 Describe Newton’s Second Law of Motion.
Key Terms:
 Newton: SI Unit of Force
Effects of Unbalanced Forces
 Read this section. Answer the following question.
 DESCRIBE: What effect does an unbalanced force have on a moving object?
When an unbalanced force acts on a moving object, the motion of the object is
_____________________.
Force, Mass, and Acceleration
 Read this section. Answer the following question.
 IDENTIFY: What three factors affect the acceleration of an object?
The three factors that affect the acceleration of an object are the
___________ of the force, the _____________________ in which the force
acts, and the _________________ of the object.
Newton’s Second Law
 Read this section. Answer the following question.
 DEFINE: What is 1N of force equal to?
1 Newton of force is equal to one kilogram-____________ per ______________
per ________________. An unbalanced force of 1 Newton will accelerate a mass
of ____________ at _________________.
Standard(s): 1.4
TA: _____________
Independence Level: __________%
Assistance, coaching, prompting: __________________________________________________
Using Newton’s Second Law
 Read this section. Answer the following question. SHOW YOUR WORK!
 CALCULATE: How much force is needed to give a 5kg mass an acceleration of 20m/s2?
F=__________
F=m a
m=__________
______=________ * _________
_______= _______ N
a=__________
CHECKING CONCEPTS
1. When it is acted on by an unbalanced force, an object will __________________________.
2. When an unbalanced force acts on an object at rest, the object will
___________________________.
3. A change in velocity is called an _____________________________.
4. A large force will cause ______________________ acceleration than a small force.
5. Newton’s second law of motion states that force is equal to ________________________
times acceleration.
6. The ____________________ is a unit of force equal to 1kgm/s2.
THINKING CRITICALLY :
7. CALCULATE: What force is needed to accelerate a 2kg mass at rest to a rate of 1m/s2?
F=__________
F=m a
m=__________
______=________ * _________
_______= _______ N
a=__________
Page 2 of 3
8. With what force would you have to push a 50kg skater to increase the skater’s speed by
2m/s2?
F=__________
F=m a
m=__________
______=________ * _________
_______= _______ N
a=__________
INTERPRETING VISUALS: USE COMPLETE SENTENCES TO ANSWER THE
FOLLOWING QUESTION.
9. Will the acceleration of the piano be greater in A or in B? Use Newton’s Second Law of
Motion to explain your answer.
The acceleration of the piano would be greater in ____________. The mass of the
piano is the ______________in both situations. But in __________ there is
twice as much force being applied to the piano. For the same mass, twice as much
____________ produces ____________ as much acceleration.
Page 3 of 3