Question

which of newtons three laws applies? law 1, 2, or 3?
pushing a cart down the hall, when you try to turn it it tries to go straight.
more acceleration takes more force.
when you push your knuckles into a table, it hurts your knuckles.
a ball thrown into the ground bounces back up.

Explanation:

• Pushing a cart down the hall, when you try to turn it it tries to go straight: Newton's first law (Law of Inertia) states that an object in motion will stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force. The cart's tendency to go straight when turning is due to inertia.
• More acceleration takes more force: Newton's second law is \(F = ma\) (Force = mass × acceleration). When mass is constant, more acceleration (\(a\)) requires more force (\(F\)).
• When you push your knuckles into a table, it hurts your knuckles: Newton's third law states that for every action, there is an equal and opposite reaction. When you push (action) on the table, the table pushes back (reaction) on your knuckles.
• A ball thrown into the ground bounces back up: When the ball hits the ground (action force), the ground exerts an equal and opposite reaction force, causing the ball to bounce back up. This is in line with Newton's third law.

Answer:

1. Law 1
2. Law 2
3. Law 3
4. Law 3