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Name Date Class




The Nature of Force

1. Changes in motion are caused by


2. Forces are described by


3. What can you say about an object at rest pulled in opposite directionsby equal forces?___




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4. What can you say about an object at rest pulled in opposite directions byunequal forces?________








5. CALCULATE


a) You push on a desk with a force of 120 N to the right.
Your friend pushes on the same desk with a force of 90 N to theleft.
What is the net force on the desk?


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b) If you pull on one end of the skateboardwith a force of 15 N,
while your partner pulls on the other end with a force of 10 N, what
do you think will happen to the skateboard?









c) Your friendincreases her force on the desk by 30 N. She
doesn’t change the direction of her push. What happens to the net
force on the desk? Will the desk accelerate?d) If you pull on one end of the skateboard with a force of 3 N,
while your partner pulls on the other end with a force of 6 N, what do
you think will happen to theskateboard?


















change an object’s motion push or pull

do not change an object’s motion have direction

net force = 0 N net force does not equal 0 N

1.2. newton

3. force

4. balanced forces

5. unbalanced forces

6. net force
a. the SI unit for force

b. sum of all forces acting on an objectc. push or pull

d. can change an object’s motion

e. will not change an object’s motion




If the statement is true, write true. If the statement is false, change the underlined word...