flash card

Question 1

what is Force =

Answer 1

push or pull; described by

strength (N) and direction

Question 2

what is Unit of Force

Answer 2

Newton (N); where 1N 100 g

Question 3

what is Force Instrument

Answer 3

force meter/spring scale (N)

Force is represented as an arrow (with direction)

longer arrow ~ greater force

Question 4

what is Net Force

Answer 4

= combining forces

if forces are in the same direction, you

add together to produce a net force.if forces are in opposite directions, you
subtract to produce a net force in the
direction of the larger force.

if opposing forces are of equal strength,

there is no (zero) net force.

Answer 5

Unbalanced forces occurs when a net force is
present causing a change in the object’s
motion.

if two unbalanced forces are in the same
direction, the net force is the sum (+) of the
forces.

if two unbalanced forces are in the opposite
directions, the net force is the difference (-)
between the forces.

Question 6

what is OBJ

Answer 6

Given notes and activity sheet SWBAT explain
the factors affecting friction and gravity and why
acceleration during free fall with 80% accuracy.

Question 7

what is DN:

Answer 7

Distribute Friction and Gravity Packet

Question 8

what is ACT:

Answer 8

Introduction to Friction (Define, Factors Affecting
Friction, Types, Beneficial vs Harmful).

Question 9

what is Friction

Answer 9

: the force that two surfaces exert
on each other when they rub against each
other.

Question 10

what is Factors Affecting Friction:

Answer 10

1) weight

2) rough versus smooth surfaces

3) lubricants (oils, grease); ball bearings

4) surface area

Question 11

what is Friction

Answer 11

: a force that acts in a direction opposite to
the direction of the object’s motion. Four (4) types: