A ball bounces on the ground. How do the ball and the ground act on each other? (1 point)
• The ball and the ground exert forces on each other with equal magnitude and in the same direction.
• The ball and the ground exert forces on each other with equal magnitude but in opposite directions.
• The ball exerts a stronger force than the ground and in the opposite direction.
• The ball exerts a stronger force than the ground but in the same direction.
The ball and the ground exert forces on each other with equal magnitude but in opposite directions.
The correct answer is: The ball and the ground exert forces on each other with equal magnitude but in opposite directions.
The correct answer is: The ball and the ground exert forces on each other with equal magnitude but in opposite directions.
To understand why, let's consider Newton's third law of motion, which states that for every action, there is an equal and opposite reaction. When the ball hits the ground, it exerts a downward force on the ground. Simultaneously, the ground exerts an equal and opposite force on the ball, pushing it back up.
This force exerted by the ground on the ball is what causes the ball to bounce. As the ball compresses upon hitting the ground, it stores potential energy in its structure. This potential energy is then converted into kinetic energy as the ball springs back up. The force exerted by the ground in the opposite direction provides the necessary upward acceleration for the ball to bounce.
Therefore, the ball and the ground interact by exerting equal and opposite forces on each other.
According to Newton's third law of motion, which statement is always correct? (1 point)
ILS
• If two moving objects collide, then they will bounce off each other.
• If a moving object hits another object, then the second object will start moving.
• If two moving objects collide, then both will stop moving.
• If a moving object hits another object, then the second object will push back.
According to Newton's third law of motion, the statement that is always correct is: If a moving object hits another object, then the second object will push back.
This is because Newton's third law states that for every action, there is an equal and opposite reaction. When one object exerts a force on another object, the second object will push back with an equal force in the opposite direction.
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)
OURSE TOOLS
• 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.
• Both balls will swing to the left.
• Both balls will swing to the right.
When the ball on the left is pulled to the side and then released, it will swing back and hit the ball on the right. According to the law of conservation of momentum, the total momentum before the collision is equal to the total momentum after the collision, assuming there are no external forces acting on the system.
Since the two balls have the same mass and were initially at rest, their total momentum before the collision is zero. After the collision, the momentum must still be zero. Therefore, when the ball on the left swings back and hits the ball on the right, both balls will swing to the left in order to maintain a total momentum of zero.
So the correct answer is: Both balls will swing to the left.
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 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 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 away from each other in opposite directions.
The correct answer is: 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.
Bumper cars at an amusement park demonstrate Newton's third law of motion because when two cars collide, they exert equal and opposite forces on each other. The force applied by one car is transferred to the other car, causing them to move away from each other in opposite directions.
This is an example of action and reaction forces. As one car pushes against the other, the other car pushes back with an equal and opposite force. These forces result in the cars moving away from each other after the collision.
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 same direction.
• When the octopus ejects the water out, the water acts with an equal force on the octopus 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 opposite direction.