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WorksheetsApologia Physical Science Module 7 Test
Total questions: 21
Worksheet time: 5hrs 15mins
Force is:
The ability to do work
A push or pull that acts on an object
The energy an object has
A disturbance in matter
A force that results when surfaces of objects rub against each other and opposes motion is:
energy
diffusion
friction
heat
The definition of static friction is:
friction that opposes the initiation of motion
friction that measures energy
friction that bonds one object to another object
friction that results from speed slowing down
What is the height of a building (in meters) if it takes a dropped rock 4.1 seconds to fall from its roof?
64.2 meters
42.6 meters
80.4 meters
82.4 meters
Friction that opposes motion once the motion has already started is called:
molecular friction
stubborn friction
kinetic friction
oppositional friction
A hot-air balloonist drops a rock from his balloon. It takes 7 seconds for the rock to fall to the ground. What is the balloonist's altitude in feet?
784 feet
844 feet
444 feet
708 feet
What is Newton's First Law of Motion?
An object forced into motion will resist
An object traveling with velocity moves quickly
An object moving forward has velocity
An object in motion (or at rest) will stay in motion (or at rest) until it is acted upon
Free fall is defined as:
the measure of gravitational push against molecules
the ability of a solid object to bond to an inert surface
the motion of an object when it is falling solely under the influence of gravity
the reaction of an object when it is dropped
When an object is acted on by one or more unbalanced forces, the net force is equal to the mass of the object times the resulting acceleration, we call that
Newton's Laws of Physical Science
Newton's Theory of Motion
Galileo's Study of Inclined Planes
Newton's Second Law of Motion
In space, there is almost no air, so there is virtually no friction. If an astronaut throws a ball in space with an initial velocity of 3.0 m/s to the west, what will the ball's velocity be in a year? Assume there are no nearby planets.
3.0 m/s
15 m/s
30 m/s
300 m/s
Inertia is:
the force of a stationary object
the rate of any movement an object may have
the tendency of an object to resist changes in its velocity
the measurement of an object's output force
A boy is running north with a beanbag in his hands. He passes a tree and at the moment he is beside the tree, he drops the beanbag. Will the beanbag land next to the tree?
yes
no
Suppose the situation in the previous question is now changed. The boy is running, but now his friend stands beside the tree with the beanbag. As the boy passes, he barely taps the beanbag, causing it to fall out of his friend's hand. Will the beanbag land next to the tree?
yes
no
For every action, there is an equal and opposite reaction is Newton's Third Law of Motion.
true
false
Static friction can exert a force of up to 700 N on a 500 kg box of bricks. The kinetic frictional force is only 220N. How many newtons of force must a worker exert to get the box moving?
1400 newtons of force
70 newtons of force
500 newtons of force
700 newtons of force
Static friction can exert a force of up to 700 N on a 500 kg box of bricks. The kinetic frictional force is only 220N. What force must the worker exert to accelerate the box at 0.1 m/s2 to the south?
270 newtons south
700 newtons south
500 newtons south
220 newtons south
A busy shopper is driving down the road. Many boxes sit piled on the backseat of a car, evidence of shopping activity. Suddenly, the shopper must hit the brakes to avoid a collision. What will happen to the boxes?
The boxes will be slammed farther back into the backseat.
The boxes will be slammed into the front seat where the driver can feel them.
A busy shopper is driving down the road. Many boxes sit piled on the backseat of the car, evidence of shopping activity. Suddenly, the shopper must hit the brakes to avoid a collision. What do we call what happened to the boxes?
input force
inertia
energy
ionic box bond
A child pushes against a large doghouse, trying to move it. The doghouse remains stubbornly unmoved. What exerts the equal and opposite force which Newton's third law of motion says must happen in response to the child's push?
static friction
force
kinetic friction
velocity
A boy pushes a wall with a force of 10 newtons to the east. What force is exerted by the wall on the boy?
10 newtons to the north
10 newtons to the south
10 newtons to the east
10 newtons to the west
Name the four fundamental forces in creation:
the electromagnetic force, the strong nuclear force, the weak nuclear force, and gravitational force
the electromagnetic force, the frictional force, the speed force, and the inertia force
