Physical Science Test

19 terms by AnnieLarimer

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Test: Tomorrow

Which statement illustrates Newton's first law?
a. a stone will not move unless something pushes or pulls it
b. a ball rolling across the floor eventually slows down
c. as a car comes to a stop, the passengers continue to move forward
d. all of the above

d. all of the above

Which object has the greatest inertia?
a. a tennis ball
b. a bowling ball
c. a beach ball
d. a volleyball

b. a bowling ball

What force causes a skater sliding on the ice to gradually slow down?

c. friction

A seat belt helps when your car stops suddenly by providing a(n)

d. unbalanced rearward force

If an equal force is applied to two cars of equal mass, Car A and Car B, Car A will have __________ acceleration as (than) Car B

the same

The gravitational force between two objects depends on masses of objects and

distance between objects

Which of the following exerts a gravitational force?
a. a bowling ball
b. a book
c. a feather
d. all of the above

d. all of the above

Increasing which of these conditions results in more gravitational force between two objects?
a. distance
b. acceleration
c. mass
d. surface area

c.mass

Free-fall acceleration near Earth's surface

gravity

Orbital motion is a combination of

forward motion and free fall

Which statement about weight is INCORRECT?
a. an object weighs more on the moon than it weighs more on the moon than it weighs on Earth
b. a change in an object's location can change the object's weight

a. an object weighs more on the moon than it weighs on Earth

Astronauts "float" when inside an orbiting spaceship because they are

in free fall

Which is an example of projectile motion?
a. a rolling bowling ball
b. a dart thrown at a dart board

b. a dart thrown at a dart board

Whenever a force is exerted, another force occurs that is _______ in size, and ________ in direction.

equal, opposite

The force exerted on the racket by a hit tennis ball is the

reaction force

Which statement about action-reaction force pairs is incorrect?
a. they act on the same object
b. they always occur in pairs

a. they act in the same object

Which of the following has a momentum of zero?
a. a newspaper lying on a table
b. a plane flying through the air

a.a newspaper lying on a table

When a moving bowling ball hits a pin, some of the ball's momentum

is transferred to the pin

How does the total momentum of two objects before a collision compare with the total momentum after the collision?

it is the same

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