Exam (elaborations)
PHYSICS TEST QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
- Course
- Institution
PHYSICS TEST QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
[Show more]
Content preview
PHYSICS TEST QUESTIONS ANDANSWERS WITH SOLUTIONS 2024
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? - ANSWER The net force is 30N to the right
What two quantities are necessary for a vector quantity? - ANSWER direction and magnitude
An object is at rest. The forces acting on the object - 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? - ANSWER 20 N
What is the acceleration of an object in free fall at Earth's surface? - ANSWER 9.8 m⋅s−2
A car is traveling with constant velocity. This means that _______. - 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
_______. - 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? - ANSWER 9.8 m⋅s−1
As an object freely falls, its - ANSWER velocity increases
Compared with a 1-kg block of solid iron, a 2-kg block of solid iron has the same - ANSWER nothing
At the end of two seconds of free fall, an object released from rest will have a speed of - 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 - 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 - ANSWER south
Where is your weight greater: on Earth or on the Moon? How about your mass? - 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 _______. - 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 _______. - ANSWER 0 N
An object is at rest. The forces acting on the object _______. - ANSWER are all of the above
What is the acceleration of an object in free fall at Earth's surface? - 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 -
ANSWER 50 m/s
Compared with a 1-kg block of solid iron, a 2-kg block of solid iron has twice as much - ANSWER all of the
above
, It is important to know that the term inertia refers to _______. - ANSWER the property of matter to
resist changes in motion
What is the net force that acts on a 10-N freely falling object? - 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 _______. - ANSWER has to fall faster for air resistance to match
weight
Newton's second law of motion links force, acceleration, and _______ - ANSWER mass
Whenever one object exerts a force on a second object, the second object exerts a force on the first that
_______. - 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. - ANSWER 20 N backward
Newtons first law - ANSWER intertia
Newtons second law - ANSWER acceleration
Newtons third law - ANSWER action-reaction
What is the net force acting on a falling 1-kg ball if it encounters 2 N of air resistance? - ANSWER 7.8 N
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Performance. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $16.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75632 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now