These objects are weighed as shown.
Which ball requires the strongest force to lift?
(1 point)
Responses
The baseball requires the strongest force to lift because it has the highest amount of material in it.
The baseball requires the strongest force to lift because it has the highest amount of material in it.
The golf ball requires the strongest force to lift because it has the smallest size.
The golf ball requires the strongest force to lift because it has the smallest size.
The beach ball requires the strongest force to lift because it has the largest size.
The beach ball requires the strongest force to lift because it has the largest size.
The soccer ball requires the strongest force to lift because it has the most mass.
The soccer ball requires the strongest force to lift because it has the most mass.
The soccer ball requires the strongest force to lift because it has the most mass.
To determine which ball requires the strongest force to lift, we need to consider the concept of weight. Weight is the measure of the force of gravity acting on an object. In this case, we can compare the weight of the different balls to determine which one requires the strongest force to lift.
To calculate weight, we use the formula: Weight = mass × gravitational acceleration.
Since the problem doesn't provide the mass or weight of the balls directly, we can make a reasonable assumption that each ball has the same material density. Given this assumption, we can make some general observations about the size and material in the balls.
The given options are baseball, golf ball, beach ball, and soccer ball. We can infer that the beach ball is the largest in terms of size, the golf ball is the smallest in size among the options, and the baseball and soccer ball are of intermediate sizes.
Looking at these observations, we can conclude that the weight of an object primarily depends on its mass rather than its size. Therefore, we can eliminate the options that mention size as the determining factor for the strongest lifting force.
Now, we are left with the options mentioning either material amount or mass. In this case, we can assume that the different balls have the same material density. Therefore, the ball with the most mass will have the highest weight and require the strongest force to lift.
Among the remaining options, the soccer ball is the best choice because it has the most mass compared to the other options.
So, to answer the question: The soccer ball requires the strongest force to lift because it has the most mass.
The graph shows an object’s distance traveled over a period of time
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What can you tell about the object from the graph?
(1 point)
Responses
The object is moving at a steady speed.
The object is moving at a steady speed.
The object is slowing down.
The object is slowing down.
The object is curving.
The object is curving.
The object is accelerating.
Based on the given information, we cannot determine the object's speed or acceleration from the graph alone. The graph only provides information about the object's distance traveled over time. Therefore, we cannot determine if the object is moving at a steady speed, slowing down, curving, or accelerating solely from the information provided.
Which choice represents velocity?(1 point)
Responses
35 m/s
35 m/s
4 g/mL
4 g/mL
15 km/hr west
15 km/hr west
12 m/s2
The correct choice that represents velocity is "15 km/hr west". Velocity is a vector quantity that includes both speed and direction. In this case, 15 km/hr represents the speed, and "west" represents the direction.
A plane is flying at a speed of 70 kilometers per hour. Then a tailwind (moving in the same direction as the plane) of 5 kilometers per hour acts on the plane. How is the plane’s net force calculated?(1 point)
Responses
Add the two forces together
Add the two forces together
Multiply the two forces
Multiply the two forces
Subtract the smaller force from the greater one
Subtract the smaller force from the greater one
Divide the larger force by the smaller force
Divide the larger force by the smaller force
The plane's net force is calculated by adding the two forces together.
Two kids play a game of tug-of-war, but the flag in the middle of the rope is NOT moving. What force is being applied to the rope?(1 point)
Responses
The kids apply equal force in opposing directions.
The kids apply equal force in opposing directions.
The kids apply equal forces in similar directions.
The kids apply equal forces in similar directions.
One kid applies force and the other does not.
One kid applies force and the other does not.
A kid applies more force in one direction.
The correct answer is: The kids apply equal force in opposing directions.
A student is moving furniture. Even though table A and table B are the same size, table A requires more force to move. Why?(1 point)
Responses
Table A has less weight than table B.
Table A has less weight than table B.
Table A has a greater mass than table B.
Table A has a greater mass than table B.
Table A has greater volume compared to table B.
Table A has greater volume compared to table B.
Table A has less density than table B
The correct answer is: Table A has a greater mass than table B.
Newton's First Law says that an object at rest will remain at rest, and an object in motion will remain in motion unless it is acted on by an outside force. This is the law of__________.(1 point)
Responses
inertia
inertia
momentum
momentum
gravity
gravity
velocity
The correct answer is: inertia.
A student is investigating mass and acceleration. The student applies the same force of 40 N force to two boxes that have the same size and shape. Box 1 experiences an acceleration of 10 m/s^2 and box 2 experiences an acceleration of 5m/s^2.
The student claims that box 1 must have a smaller mass than box 2. Which argument best supports the student's claim?(1 point)
Responses
Heavier objects need less force than lighter objects to accelerate at the same rate.
Heavier objects need less force than lighter objects to accelerate at the same rate.
Lighter objects need greater force than heavier objects to start moving but will accelerate at the same rate.
Lighter objects need greater force than heavier objects to start moving but will accelerate at the same rate.
Lighter objects need less force than heavier objects to start moving but will accelerate at the same rate.
Lighter objects need less force than heavier objects to start moving but will accelerate at the same rate.
Heavier objects need greater force than lighter objects to accelerate at the same rate.
Heavier objects need greater force than lighter objects to accelerate at the same rate.
The correct argument that supports the student's claim is: Heavier objects need greater force than lighter objects to accelerate at the same rate.
Two forces act on an object. One force has a magnitude of 30N directed west, and the other force has a magnitude of 12 N directed east. What is the net force on the object?(1 point)
Responses
18N east
18N east
18N west
18N west
42 N east
42 N east
42N west
To calculate the net force on an object, we need to consider both the magnitudes and directions of the forces. In this case, we have one force with a magnitude of 30 N directed west and another force with a magnitude of 12 N directed east.
To find the net force, we need to subtract the force directed east from the force directed west.
Net force = Force west - Force east
Net force = 30 N - 12 N
Net force = 18 N west
Therefore, the net force on the object is 18 N west.
While driving you hit the brakes and feel your body move forward before the seatbelt stops you. Your body moving forward is an example of (1 point)
Responses
friction
friction
balanced forces
balanced forces
inertia
inertia
equilibrium
The correct answer is: inertia. Your body moving forward when you hit the brakes is an example of inertia. Inertia is the tendency of an object to resist changes in its motion. In this case, your body wants to keep moving forward due to its inertia even when the car is decelerating.
What type of forces does this box experience and in which direction does it move?
(1 point)
Responses
Unbalanced forces and it moves to the left
Unbalanced forces and it moves to the left
Balanced forces and it doesn't move
Balanced forces and it doesn't move
Unbalanced forces and it moves to the right
Unbalanced forces and it moves to the right
Balanced forces and it moves to the left
The response is missing the description of the forces acting on the box to accurately determine the answer. Can you please provide information about the forces acting on the box?
A book is resting on a table in a state of equilibrium. Which statement is true about the forces acting on the book? (1 point)
Responses
The book experiences unbalanced forces because the force of gravity pulling down on the book and the force of the table pushing up are equal.
The book experiences unbalanced forces because the force of gravity pulling down on the book and the force of the table pushing up are equal.
The book experiences balanced forces because the force of gravity pushing down on the book is greater.
The book experiences balanced forces because the force of gravity pushing down on the book is greater.
The force of gravity pulling down the book and the force of the table pushing up on the book are equal.
The force of gravity pulling down the book and the force of the table pushing up on the book are equal.
The book experiences unbalanced forces from friction, gravity and the table.