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Physics Test Question and answers already passed Physics Test What is the net force on a box pushed to the right with 50 N of force while being pushed to the left with 20 N of force? - correct answer The net force is 30N to the right What two quantities are necessary for a vector quanti...

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  • October 19, 2024
  • 34
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • physics test question and answers already passed

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Physics Test
What is the net force on a box pushed to the right with 50 N of force while
being pushed to the left with 20 N of force? - correct answer ✔The net force
is 30N to the right


What two quantities are necessary for a vector quantity? - correct answer
✔direction and magnitude


An object is at rest. The forces acting on the object - correct answer ✔are
opposite in direction, are equal in magnitude, and have a vector sum of zero.


How much tension is there in a vertical rope that holds a 20-N bag of apples
at rest? - correct answer ✔20 N


What is the acceleration of an object in free fall at Earth's surface? - correct
answer ✔9.8 m⋅s−2


A car is traveling with constant velocity. This means that _______. - correct
answer ✔it is traveling in a straight line and its speed is not changing


A stone is dropped off a cliff and is in free fall. Every second that the stone is
falling, its acceleration _______. - correct answer ✔is constant but its
velocity is increasing


Suppose that an object in free fall were somehow equipped with a
speedometer. By how much would its speed readings increase with each
second of fall? - correct answer ✔9.8 m⋅s−1

,As an object freely falls, its - correct answer ✔velocity increases


Compared with a 1-kg block of solid iron, a 2-kg block of solid iron has the
same - correct answer ✔nothing


At the end of two seconds of free fall, an object released from rest will have a
speed of - correct answer ✔5 m/s
15 m/s
10 m/s
None of the above




None of the above


When she hikes a distance of 1 km in a time of one-half hour her average
speed is - correct answer ✔twice 1 km/h.


An object is pulled with two forces, 10 N northward and 15 N southward. The
direction of the net force is to the - correct answer ✔south


Where is your weight greater: on Earth or on the Moon? How about your
mass? - correct answer ✔Your mass is the same in both locations or any
location


Your weight is greater on Earth than on the Moon


Mass is a measure of _______. - correct answer ✔the quantity of matter in
an object and the inertia of the object

,If you pull on a box with a force of 5 N and your teacher pulls on the same box
with a force of 5 N in the opposite direction, the net force on the box is
_______. - correct answer ✔0 N


An object is at rest. The forces acting on the object _______. - correct answer
✔are all of the above


What is the acceleration of an object in free fall at Earth's surface? - correct
answer ✔9.8 m⋅s−2


A free-falling object has a speed of 30 m/s at one instant. Exactly 2 seconds
later its speed will be - correct answer ✔50 m/s


Compared with a 1-kg block of solid iron, a 2-kg block of solid iron has twice
as much - correct answer ✔all of the above


It is important to know that the term inertia refers to _______. - correct
answer ✔the property of matter to resist changes in motion


What is the net force that acts on a 10-N freely falling object? - correct
answer ✔10 N


A heavy parachutist has a greater terminal speed compared with a lighter
parachutist with the same size parachute because the heavier person
_______. - correct answer ✔has to fall faster for air resistance to match
weight


Newton's second law of motion links force, acceleration, and _______ -
correct answer ✔mass

, Whenever one object exerts a force on a second object, the second object
exerts a force on the first that _______. - correct answer ✔occurs
simultaneously


Is opposite in direction


Is equal is magnitude


When two horizontal forces are exerted on the car, 250 N forward and 230 N
backward, the car undergoes acceleration. - correct answer ✔20 N backward


Newtons first law - correct answer ✔intertia


Newtons second law - correct answer ✔acceleration


Newtons third law - correct answer ✔action-reaction


What is the net force acting on a falling 1-kg ball if it encounters 2 N of air
resistance? - correct answer ✔7.8 N


Is inertia a property of matter or a force of some kind? - correct answer ✔a
property of matter


Newton's second law of motion links force, acceleration, and _______. -
correct answer ✔mass

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