A ball bounces on the ground. How do the ball and the ground act on each other? (1 point)
A. The ball exerts a stronger force than the ground but in the same direction.
B. The ball and the ground exert forces on each other with equal magnitude but in opposite directions.
C. The ball and the ground exert forces on each other with equal magnitude and in the same direction.
D. The ball exerts a stronger force than the ground and in the opposite direction.
B. The ball and the ground exert forces on each other with equal magnitude but in opposite directions.
C. If a moving object hits another object, then the second object will push back.
According to Newton's third law of motion, which statement is always correct? (1 point)
• If two moving objects collide, then both will stop moving.
• If two moving objects collide, then they will bounce off each other.
• If a moving object hits another object, then the second object will push back.
• If a moving object hits another object, then the second object will start moving.
Two metal balls with the same mass hang so that they are touching each other. The ball on the left is pulled to the side and released. What will happen when it swings back and hits the ball on the right? (1 point)
• Both balls will swing to the right.
• Both balls will swing to the left.
• The ball on the left will stop, and the ball on the right will remain still.
• The ball on the right will swing to the right.
How do bumper cars at an amusement park demonstrate Newton's third law? (1 point)
If two bumper cars collide with a certain force, then they will move away from each other in opposite directions with the same force.
If two bumper cars collide with a certain force, then they will move away from each other in opposite directions with a stronger force.
If two bumper cars collide with a certain force, then one car will transfer its force to the other car and they will move together in the same direction.
If two bumper cars collide with a certain force, then one car will transfer its force to the other car and they will move away from each other in opposite directions.
An octopus propels itself through the water by ejecting water through a funnel in its body. How does this demonstrate Newton's third law? (1 point)
When the octopus ejects the water out, the water acts with an equal force on the surrounding water in the opposite direction.
When the octopus ejects the water out, the water acts with an equal force on the octopus in the same direction.
When the octopus ejects the water out, the water acts with an equal force on the surrounding water in the same direction.
When the octopus ejects the water out, the water acts with an equal force on the octopus in the opposite direction.
To determine how the ball and the ground act on each other, we need to understand Newton's third law of motion, which states that for every action, there is an equal and opposite reaction. In the case of the ball bouncing on the ground, when the ball hits the ground, it exerts a force on the ground, and the ground, in turn, exerts an equal magnitude of force back on the ball.
Therefore, the correct answer is B. The ball and the ground exert forces on each other with equal magnitude but in opposite directions.