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.