Physics Test 2 Most Recent 2025/2026
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An object starts from rest and slides with negligible friction down an air track
tipped at an angle θ from the horizontal. A student records values of the object's
position along the track at various times. The value of θ can best be determined
from which of the following? - CORRECT ANSWER-The slope of a graph of
position as a function of the square of time
Students work together during an experiment about Newton's laws. The students
use a setup that consists of a cart of known mass connected to one end of a string
that is looped over a pulley of negligible friction, with its other end connected to a
hanging mass. The cart is initially at rest on a horizontal surface and rolls without
slipping when released. The inertia of the cart's wheels is negligible. Students
have access to common laboratory equipment to make measurements of
components of the system.
By collecting the appropriate data, the students can determine the relationship
between the acceleration of the cart and the net force exerted on the cart. Which
, of the following graphs should the students produce to show the correct
relationship? - CORRECT ANSWER-As net force increases, so does acceleration
Students work together during an experiment about Newton's laws. The students
use a setup that consists of a cart of known mass connected to one end of a string
that is looped over a pulley of negligible friction, with its other end connected to a
hanging mass. The cart is initially at rest on a horizontal surface and rolls without
slipping when released. The inertia of the cart's wheels is negligible. Students
have access to common laboratory equipment to make measurements of
components of the system.
The students double the mass that hangs from the string. They also replace the
original cart with a new cart that has double the mass. By doubling both masses,
how will the tension in the string and the acceleration of the cart change? -
CORRECT ANSWER-The tension will double, but the acceleration will stay the
same.
*strength of two people increases but proportion of movement does not
In a lab, a block weighing 80 N is attached to a spring scale, and both are pulled to
the right on a horizontal surface, as shown above. Friction between the block and
the surface is negligible. What is the acceleration of the block when the scale
reads 32 N? - CORRECT ANSWER-4.0 m/s^2
Complete Questions and Correct Detailed
Answers Already Graded A+|Assured
Success
An object starts from rest and slides with negligible friction down an air track
tipped at an angle θ from the horizontal. A student records values of the object's
position along the track at various times. The value of θ can best be determined
from which of the following? - CORRECT ANSWER-The slope of a graph of
position as a function of the square of time
Students work together during an experiment about Newton's laws. The students
use a setup that consists of a cart of known mass connected to one end of a string
that is looped over a pulley of negligible friction, with its other end connected to a
hanging mass. The cart is initially at rest on a horizontal surface and rolls without
slipping when released. The inertia of the cart's wheels is negligible. Students
have access to common laboratory equipment to make measurements of
components of the system.
By collecting the appropriate data, the students can determine the relationship
between the acceleration of the cart and the net force exerted on the cart. Which
, of the following graphs should the students produce to show the correct
relationship? - CORRECT ANSWER-As net force increases, so does acceleration
Students work together during an experiment about Newton's laws. The students
use a setup that consists of a cart of known mass connected to one end of a string
that is looped over a pulley of negligible friction, with its other end connected to a
hanging mass. The cart is initially at rest on a horizontal surface and rolls without
slipping when released. The inertia of the cart's wheels is negligible. Students
have access to common laboratory equipment to make measurements of
components of the system.
The students double the mass that hangs from the string. They also replace the
original cart with a new cart that has double the mass. By doubling both masses,
how will the tension in the string and the acceleration of the cart change? -
CORRECT ANSWER-The tension will double, but the acceleration will stay the
same.
*strength of two people increases but proportion of movement does not
In a lab, a block weighing 80 N is attached to a spring scale, and both are pulled to
the right on a horizontal surface, as shown above. Friction between the block and
the surface is negligible. What is the acceleration of the block when the scale
reads 32 N? - CORRECT ANSWER-4.0 m/s^2
