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Newton's First Law of Motion (Worksheet)
Q.1. Write T or True if the statement is true; write F or False if the statement is false.
_________ 1. Newton’s first law of motion is also known as the law of inertia.
_________ 2. The more mass an object has, the less inertia the object has.
_________ 3. Force is defined as the push or a pull on an object that has magnitude and
direction.
_________ 4. If an object is at rest, no forces are acting on the object.
_________ 5. An eraser sits on the table forever unless an unbalanced force acts upon it.
Q.2. Use the words in the box to complete sentences about Newton's first law of motion.
•
unbalanced force
•
in motion
•
at rest
•
balanced force
a) An object at rest tends to stays __________.
b) An object in motion tends to stays ___________.
c) An object acted upon by _______________ stays
at rest.
d) An object acted upon by ___________________
changes speed and direction.
Q.3. Which of the following terms is defined as the tendency of objects to resist changes in
their state of motion?
a) Speed
b) Inertia
c) Force
d) Mass
Q.4. Which of the following quantity determines the inertia of an object?
a) Volume
b) Density
c) Mass
d) Net force
Q.5. Which of the following terms is defined as the sum of all forces exerted on an object?
a) Volume
b) Density
c) Mass
d) Net force
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Q.6. What is the unit of force?
a) Newton
c) Meter
b) Kilogram
d) Second
Q.7. Which of the following pictures is an example of Newton's first law of motion?
a)
b)
c)
d)
Q.8. Two 15 N forces in opposite directions are acting on an object. What is the magnitude
of the net force?
a) 0 N
b) 10 N
c) 20 N
d) 30 N
Q.9. Two 15 N forces in same directions are acting on an object. What is the magnitude of
the net force?
a) 0 N
b) 10 N
c) 20 N
d) 30 N
Q.10. Which of the following scientist is responsible for the three laws of motion?
a) Leonardo da Vinci
b) Sir Isaac Newton
c) Albert Einstein
d) Galileo Galilei
Q.11. Which of the following box has more inertia?
a)
b)
c)
d)