Physics:4D-Newton

Quiz by Sherry Felux-Bell

High School
Physics (2017)
Texas Essential Knowledge and Skills (TEKS)

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16 questions
• Q1
A high school science lab recently misplaced all of their triple beam balances. An experiment requires the students to know the mass of a particular object. The lab has digital force and acceleration sensors that students use to generate the graph below. What is the mass of the object according to the Acceleration-Force graph shown above?
0.05 kg
40 kg
2 kg
20 kg
120s
112.39.c.4.d
• Q2
A strength and conditioning coach recommends that an athlete train by pulling a large amount of mass while sprinting. If action-reaction forces are always equal and opposite, which explanation best describes the action-reaction pair acting on the runner shown above?
The runner will accelerate forward because the force of friction by the mass on the runner is always less than the applied force by the runner, resulting in a net force forward.
The runner will accelerate forward because the applied force exerted by the runner creates an equal and opposite frictional force by the ground, but these forces are exerted on different objects.
The runner will not move because the applied force exerted by the runner on the mass will create an equal and opposite frictional force, canceling the applied force.
The runner will remain motionless because the applied force by the runner in the forward direction is less than the frictional force from the ground acting in the opposite direction.
120s
112.39.c.4.d
• Q3
A book is at rest on a level table as shown below. Refer to the above image. Which best represents the action-reaction force that allows the book to remain at rest?
The action force is the gravitational force pulling the book downward towards the table, and the reaction force is the friction between the book and the table.
The action force is friction between the book and the table, and the reaction force is the gravitational force pulling the book downward towards the table.
The action force is the normal force of the table pushing the book upwards, and the reaction force is the gravitational force pulling the book downward towards the table.
The action force is the gravitational force pulling the book downward towards the table and the reaction force is the normal force of the table pushing the book upwards.
120s
112.39.c.4.d
• Q4
During a lab, a student rolls a ball down the hallway. The position vs. time graph below shows the position of the ball at different times. According to the information and graph above, which force is most responsible for the decrease in velocity over time?
Spring force
Normal force
Frictional force
Gravitational force
120s
112.39.c.4.d
• Q5
A ball is left in the cabin of an airplane. When the plane accelerates forward, the passengers remain in their seats, and the ball rolls to the back of the cabin. According to the information and diagram shown above, what happens to the ball when the plane stops?
The ball continues moving backward just as it was when the plane was accelerating forward.
The ball’s inertia keeps it from moving forward.
The ball accelerates toward the back of the plane with a higher magnitude.
The ball rolls to the front of the cabin.
120s
112.39.c.4.d
• Q6
A pickup truck is capable of producing 515 N•m of torque. How much force does the engine produce if the force acts 0.25 m from the pivot point?
128.75 N
20.6 N
515.25 N
2060 N
120s
112.39.c.4.d
• Q7
NASA is concerned about the ability of a future lunar outpost to store the supplies necessary to support the astronauts. The supply storage area of the lunar outpost, where gravity is 1.63 m/s , can only support 1 x 10 N. What is the maximum weight of supplies, as measured on Earth, NASA should plan on sending to the lunar outpost?
61,300 N
100,000 N
601,000 N
16,300 N
120s
112.39.c.4.d
• Q8
A student is pushing her car to the nearest gas station applying a force of ‘F’ on the car with a mass of ‘m’, resulting in an acceleration of ‘a.’ A friend stops to help push the car, thus doubling the force applied. Which expression best represents the acceleration of the car after her friend begins to push?
2a
g
a
a/2
120s
112.39.c.4.d
• Q9
A man (100 kg) and his son (50 kg) are trapped in the middle of a frozen pond (a frictionless surface). The man and his son decide to push against each other and slide across the ice to the edge of the pond. Which of the following statements is true?
.Both will make it off of the pond, but the son will get there first.
Only the dad will make it off of the pond.
Both will make it off of the pond, but the man will get there first
Only the son will make it off of the pond
120s
112.39.c.4.d
• Q10
A box is initially sliding across a level floor at 10 m/s before being subjected to the forces shown below. According to the above information and diagram, which of the following best describes the motion of this object?
The box moves at a constant velocity.
The box accelerates to the right.
The box accelerates to the left.
The box is at rest
120s
112.39.c.4.d
• Q11
A runner accelerates at 2 m/s when subjected to the forces below. According to the information and diagram above, what is the value of the frictional force on the runner?
300 N
700 N
0 N
500 N
120s
112.39.c.4.d
• Q12
A force of 100 N is used to rotate a bolt using a 0.15 m long wrench as shown below. According to the diagram above, what is the torque provided by the wrench?
15 N•m
99.85 N•m
0.0015 N•m
667 N•m
120s
112.39.c.4.d
• Q13
A car is initially travelling with a positive constant velocity before being subjected to the forces below. What is the magnitude of acceleration of the car as described by the above free body diagram?
500 m/s^2
0.5 m/s^2
None of these
4.9 m/s^2
120s
112.39.c.4.d
• Q14
The illustration below shows the direction of forces on an automobile as it moves in a straight line. If the drag force (due to a gust of wind) increases, yet remains less than the applied force, which of the following describes the motion of the automobile above? (Note: The magnitudes are not drawn to scale.)
The car will maintain a constant velocity.
The car will rotate about the center of mass.
The car’s magnitude of velocity will increase.
The car’s magnitude of velocity will decrease.
120s
112.39.c.4.d
• Q15
A box is initially sliding across a level floor at 10 m/s before being subjected to the forces shown below. Refer to the above information and diagram. What is the sum of forces for this FBD?
20 N
200 N
0 N
120 N
120s
112.39.c.4.d

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