When someone jumps down on a trampoline, that person is propelled upwards. Choose the best statement describing how this demonstrates Newton’s third law.(1 point)
Responses
The trampoline pushes back with equal force but in the opposite direction.
The trampoline pushes back with equal force but in the opposite direction.
The direction of the motion is changed by the surface area of the jumper that comes in contact with the trampoline.
The direction of the motion is changed by the surface area of the jumper that comes in contact with the trampoline.
The style of the jumper’s footwear affects the first action of compressing the jumping surface.
The style of the jumper’s footwear affects the first action of compressing the jumping surface.
The color of the trampoline’s jumping surface can affect the reaction force.
The best statement that describes how a person being propelled upwards on a trampoline demonstrates Newton's third law is:
"The trampoline pushes back with equal force but in the opposite direction."
This is a direct example of Newton's third law of motion, which states that for every action, there is an equal and opposite reaction. When a person jumps down onto the trampoline, their weight and force push down on the trampoline's surface (action). The trampoline then exerts an equal force upward against the person (reaction), propelling them back into the air.
The other statements do not accurately represent Newton's third law in the context of jumping on a trampoline. The surface area of contact, the style of the jumper's footwear, and the color of the trampoline do not relate to the law of action and reaction described by Newton's third law.
When inflating a balloon, which of the following represents an equal but opposite force acting on the balloon?(1 point)
Responses
the expansion of the balloon
the expansion of the balloon
the air entering the balloon
the air entering the balloon
tying the balloon
tying the balloon
releasing the balloon
"The air entering the balloon" represents an equal but opposite force acting on the balloon when inflating it.
When you blow air into a balloon, you are exerting a force on the air particles, pushing them into the balloon (action). The equal but opposite force (reaction) is the pressure of the air particles pushing back against the inside walls of the balloon as they are compressed. This pressure increases as more air is added, causing the balloon to expand. Newton's third law of motion explains this interaction: for every action, there is an equal and opposite reaction. The expansion of the balloon is a consequence of the forces at play and not the immediate reaction force itself. Tying the balloon and releasing the balloon are subsequent actions unrelated to the initial force of the air being blown into the balloon.
A force of 30 N to the right is applied to an object. An opposite force of 20 N to the left is applied to the same object. What is the net force applied to the object?(1 point)
Responses
10 N to the left
10 N to the left
10 N to the right
10 N to the right
50 N to the left
50 N to the left
50 N to the right
The net force applied to the object is 10 N to the right.
When calculating net force, you subtract the smaller force from the larger force and keep the direction of the larger force. In this case, 30 N (right) - 20 N (left) leaves you with a net force of 10 N in the direction of the larger force, which is to the right.
Two objects with the same mass have the same force applied to them. What can be said of their acceleration?(1 point)
Responses
Their acceleration will be the same.
Their acceleration will be the same.
Their acceleration will depend on their weight, which is not provided.
Their acceleration will depend on their weight, which is not provided.
Their acceleration will depend on their net force, which is not provided.
Their acceleration will depend on their net force, which is not provided.
Their acceleration will be different.
Their acceleration will be the same.
According to Newton's second law of motion (F = ma), if two objects have the same mass and the same force is applied to them, they will experience the same acceleration, given there are no other external forces or resistances acting differently on the two objects. Since force equals mass times acceleration, the same force applied to the same mass results in the same acceleration.
What do force diagrams show?(1 point)
Responses
the acceleration of forces acting on an object
the acceleration of forces acting on an object
the magnitude and direction of forces acting on an object
the magnitude and direction of forces acting on an object
the mass of forces acting on an object
the mass of forces acting on an object
the balanced forces acting on an object