#### Transcript 3rd quarter study guide

```rd
3
quarter study guide
Acceleration.
a. The rate at which velocity changes is
called
 b. Distance traveled in a unit of time
 c. Traveling from point A to point B

To determine the acceleration rate of an object, you must
calculate the change in ________ during each unit of time
a.
 b.
 c.
 d.

speed.
velocity.
motion.
deceleration.
Law of Interia
a.Newton’s third law
 b.Newton’s first Law
 c.Newton’s second law

The amount of matter in an object is
called its
a.
 b.
 c.
 d.

inertia.
mass.
force.
balance.
Air resistance is a type of
a.
 b.
 c.
 d.

motion.
acceleration.
velocity.
friction.
Which of the following is an example of
decreasing friction intentionally?
a. waxing skis
 b. throwing salt on an icy driveway

Acceleration is
a. Changing direction only
 b. Changing direction or speed
 c. Changing time

A bus that travels 250 kilometers in 5 hours is traveling at
what average speed?
a.
 b.
 c.
 d.

50 km/h
100 km/h
2 km/h
25 km/h
Write next to each if rolling, fluid, or
sliding friction
a.
 b.
 c.
 d.

tires to a skate board
a grease on a door hinge
two hands rubbing together
Write next to each if rolling, fluid, or
sliding friction
Sliding
 b. tires to a skate board

Rolling

c. a grease on a door hinge
Fluid

d. two hands rubbing together
Sliding
______ equals mass times acceleration
a.
 b.
 c.
 d.

speed.
motion.
force.
inertia.
The balloon rocket lab we preformed in class
can be explained by
a.
 b.
 c.
 d.

Newton’s first law.
Newton’s second law.
Newton’s third law.
the law of conservation of momentum.
Force is a .
a. inertia.
 b. acceleration.
 c. Push or pull

The force of gravity on a person or object at the
surface of a planet is known as
a.
 b.
 c.
 d.

mass.
inertia.
air resistance.
weight.
When a person jumps off the diving board
the only force acting on them is:
a.
 b.
 c.
 d.

stationary.
decelerating.
in free fall.
a projectile.
The law of universal gravitation states
a. all objects attract each other.
 b. all objects repel each other.
 c. all objects combine to provide a
balanced force.
 d. all objects create friction.

The greater the mass of an object,

a. the easier the object starts moving.
b. the greater its inertia.
 c. the more balanced it is.
 d. the more space it takes up.

Velocity

a. You know acceleration of the object.
 b. You know distance the object has
traveled.
 c. You know both the speed and direction
of an object’s motion.

According to Newton’s third law of motion, when
a ball bounces and exerts force on a floor, the
floor
a.
 b.
 c.
 d.

creates a friction with the ball.
bounces higher.
exerts an equal force back on the ball.
moves at a constant speed.
What happens when two forces act in
the opposite direction?
a. They work against each other.
 b. The stronger one prevails.
 d. Their sum divided by two is the total
force.

Friction
a. The force that one surface exerts on
another when the two rub against each
other
b. Change in velocity over time
 d. Amount of force put on an area

An example of deceleration?
a. a bird taking off for flight
 b. a baseball released by a pitcher
 c. a bike approaching a stop sign
 d. an airplane following a straight flight
path

When an object’s distance from another
object is changing
a.
 b.
 c.
 d.

it
it
it
it
is in motion.
is speeding.
has a high velocity.
is accelerating.
Momentum
a. Distance÷Time
 b. Mass X velocity
 c. Mass X acceleration

Speed equals
a. Distance÷Time
 b. Mass X velocity
 c. Mass X acceleration

According to the law of conservation of
momentum
a. velocity increase.
 b. velocity decreases.
 c. momentum is not lost.

A place or object used for comparison to
determine if something is in motion is called
a.
 b.
 c.
 d.

a constant.
a reference point.
a position.
velocity.
The momentum of an object is in the
same direction as its
a.
 b.
 c.
 d.

force.
acceleration.
velocity.
inertia.
The force that pulls falling objects
toward Earth is called
a.
 b.
 c.
 d.

freefall.
gravity.
acceleration.
air resistance.
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