Δοκιμή πρακτικής φυσικής για την εξέταση HESI®
Welcome to the free HESI physics practice tests.
The attached sample test contains 10 HESI physics practice test questions, so you can precisely understand how to prepare for the upcoming HESI test’s physics knowledge.
ο HESI test may be unstable, so you must read the entire query carefully, just like the entirety of an appropriate answer.
In this exam, Every question is accompanied by the correct answer and a clear explanation of the solution (roughly the same as the content in our HESI physics practice test package).
At the end of the training exam, you will get a score report that separates the subtopics that you should zero to improve quickly.
Please let us know how you performed in your speech. Please make sure to distribute this article to your peers, who may even think this is support for you.
The acceleration due to gravity on Earth is -9.8 m/s². Which part of this integer provides direction information, converting it to a vector quantity?
Correct answer: We know it's a vector quantity because the negative sign indicates a downward acceleration.
Direction and magnitude are encoded in vector quantities. The magnitude of a scalar quantity is the sole thing that gives it meaning.
The unit of the quantity is the gravitational acceleration constant for Earth: -9.8 m/s². Because the units of acceleration are length/time2, this indicates that the quantity is acceleration. It also indicates that we are using SI units. We must convert things if an issue delivers amounts in a different metric system.
− (The negative sign) indicates the quantity's direction. The positive symbol + is frequently omitted when the value is positive. We know the quantity is a vector because of its name and context.
On Earth, gravity drags us to the surface. As a result, we know that the gravitational acceleration constant has a negative sign, indicating that gravity is downward.
A ball is kicked off the edge of a 34-meter-high roof. The ball is given a horizontal speed of 12.5 m/s. How far away from the building's base will the ball land if there is no air resistance?
Correct answer: 32.86 m
Vₓ= (12.5 m/s) horizontal velocity
dᵧ= the object's vertical displacement (34 m)
dₓ = unidentified (this is what we are solving for)
t = unidentified (flight time)
a = 9.8 m/s²
Because no air resistance is assumed, dₓ = Vₓ t.
To solve this problem, we'll apply the distance equation (dₓ = Vₓ t). However, the flight time (t) is not specified in the problem, therefore we must solve for it. The following is the equation to solve for flying time:
√((vertical distance)/(1/2)(vertical acceleration)) = Flight Time
We receive the following results when we plug in our known quantities:
√((34 m)/(1/2)(9.8 m/s²)) = Flight Time
2.63 second flight time
dx = vₓt
dₓ = 12.5 m/s x 2.63 s
dₓ = 32.86 m
the rate at which a vehicle's velocity changes over time
Correct answer: Acceleration
Acceleration is the rate of change in velocity over a period of time
A quantity that describes the rate at which an object's position changes over time and must be represented in both magnitude and direction of motion.
Correct answer: Vector quantity
Vector quantity is a quantity describing the time rate of change of an object's position and must be expressed in both units of magnitude and direction of motion.
What is the frequency of a wave in a string that moves at 52 m/s and has a wavelength of 0.65 m?
Correct answer: 80 Hz
Frequency is equal to the product of speed and wavelength.
frequency = 52 m/s / 0.65 m
80 Hz is the frequency.
A human weighs 76 kg. What is this person's weight on the earth?
Correct answer: 745 N
Weight = milligrams
The person's weight is 76 kilograms.
Earth's gravitational constant is 9.8 m/s².
Weight = 76 kg x 9.8 m/s² = 744.8 N = 745 N
On the ice, a hockey puck comes to a slow stop. The puck has a mass of 0.5 kg and a friction force of 2.3 N between it and the ice. What is the puck's rate of acceleration?
Correct answer: -4.6 m/s²
ma = F
where
F stands for Force.
m stands for mass (in kg)
a = rate of change (in m/s²)
To determine an object's acceleration, we must first isolate acceleration. We do it by dividing both sides by the mass:
ma = f
ma/m = f/m
a = F/m
4.6 m/s2 = 2.3 N / 0.5 kg
Because the puck is slowing down, we know this force is negative.
A baseball weighing 0.125 kg is thrown at 40.1 meters per second. What is the ball's Kinetic Energy?
Correct answer: 101 J
½ x mv² = KE
KE stands for kinetic energy (measured in Joules – J).
m stands for mass (expressed in kilograms)
v² stands for velocity (expressed in meters per second squared)
1/2 x mv²= KE
v = 40.1 m/s
v = 40.1 m/s
KE = 1/2 x (0.125 kg) x (40.1 m/s)² = 100.5 J, or 101 J rounded up.
Which of the following statements about a negatively charged particle is correct?
Correct answer: There are more electrons than protons in it.
Electrons (which have a negative charge) outnumber protons in a negatively charged particle (which have a positive charge).
What is the speed of sound in a vacuum?
Correct answer: 0 m/s
Because sound waves cannot travel through a vacuum, the speed of sound in a vacuum is 0 m/s.
The refractive index of chloroform is 1.44. In this medium, what is the speed of light?
Correct answer: 2.08 x 10⁸m/s
n=c/v
1.44=(3.oo x 10⁸m/s)/v
v=(3.oo x 10⁸m/s)/1 .44
v=2.08 x 10⁸m/s
Kath's car went from 0 to 60 miles per hour in 2.5 seconds. What was the car's rate of acceleration?
Correct answer: 24 m/s²
Acceleration is defined as a change in velocity over time.
The car accelerates from 0 to 60 m/s, resulting in a velocity change of:
60 m/s minus 0 m/s equals 60 m/s
The car took 2.5 seconds to reach 60 m/s, thus the total time is 2.5 seconds.
These figures are entered into the formula:
60 m/s ÷ 2.5 s = acceleration
24 m/s2 = acceleration
A push or a pull on an item is defined as _________.
Correct answer: Force
Force is defined as a push or a pull on an object.
Unless operated on by an imbalanced force, the body at rest will remain at rest, and the body in motion will remain in motion with a constant velocity; F=ka
Correct answer: Newton's First Law of Motion
Newton's First Law of Motion states that the body at rest will remain at rest, and the body in motion will remain in motion with a constant velocity, unless acted on by an unbalanced force; F=ka
calculated by taking the object's initial and final speeds and averaging them
Correct answer: Average velocity
Average velocity is calculated by taking the object's initial and final speeds and averaging them
The quantity stated in units of magnitude and is described simply by a numeric value.
Correct answer: Scalar Quantity
The Scalar quantity stated in units of magnitude and is described simply by a numeric value.
According to the same-name theory, there were only two things left after the "Big Bang"?
Correct answer: antimatter and matter
The Big Bang Theory tries to explain how the universe came to be. According to the theory, a "big bang" produced equal amounts of matter and antimatter.
Jessa drives her car for 15 minutes at an average speed of 35 mph. What was the length of her journey?
Correct answer: 8.75 miles
Distance traveled divided by time equals average speed.
(Average Speed) x (time) = (Distance Traveled)
The average speed is 35 miles per hour.
15 minutes divided by 60 minutes equals 1/4 hour
Distance traveled = (35 mph)(1/4 hours) = 8.75 miles
average speed = d/t
is the distance an object travels divided by the time it takes to travel in the same direction.
Correct answer: Velocity
The term "velocity" refers to the speed at which something moves in a given direction.
It is possible for an object to show two different types of motion at the same time.
Correct answer: Project Motion
In Project Motion it is possible for an object to display two types of motion simultaneously.