Question

an ice skater at rest pushes against a sled at rest, causing both the skater and sled to move away from each other with different accelerations. acceleration is caused by a force acting on a mass. a person in car slides to the right when going through a very sharp left turn on the highway. a magician pulls a tablecloth out from under dishes on a table without disturbing them. the swimmer moves her hand down and to the left and her body goes forward to the right. force = mass x acceleration. a force in the opposite direction to the motion of the object will cause the object to... how could you double the acceleration of an

Explanation:

Step1: Recall Newton's laws

Newton's first law is about inertia, second law is $F = ma$, and third law is about action - reaction.

Step2: Analyze each scenario

• For the ice - skater and sled: This is an action - reaction example, so it's Newton's 3rd law.
• "Acceleration is caused by a force acting on a mass" is Newton's 2nd law ($F=ma$).
• A person in a car sliding during a turn is due to inertia, Newton's 1st law.
• A magician pulling a table - cloth without disturbing dishes is also due to inertia, Newton's 1st law.
• The swimmer's motion is an action - reaction example, Newton's 3rd law.
• "Force = mass x acceleration" is Newton's 2nd law.
• A force in the opposite direction to the motion of the object causes it to decelerate (related to 2nd law as $F = ma$ and here $F$ is negative). To double the acceleration of an object, according to $F = ma$, you can double the force or halve the mass.

Answer:

1. 3rd Law
2. 2nd Law
3. 1st Law
4. 1st Law
5. 3rd Law
6. 2nd Law
7. Decelerate; Double the force or halve the mass.