Chapter 2 Laws of Motion

What is Newton's second law of motion?

• For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects
• The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
• an object at rest will stay at rest and an object in motion will stay in motion with the same speed and direction unless acted upon by unbalanced force.

True or false? It is harder to pull a puppy then it is to pull a dog

• True 
• False 

Who Came up with the laws of motion?

• Issac Newton 
• Mark Twain
• Einstein 
• Leonardo da Vinci

True or false? it is easier to push a car then it is to push a truck 

• True
• False 

What's the formula for Newton's second law of motion (Force)?

• F= M-A
• F= A/M
• F= M x A
• F= A + M 

Example: If you use the same force to push a truck and push a car which one will have more acceleration and why? 

• The truck because it has more mass 
• The car because it has less mass
• The truck
• the car

True or false? It is easier to kick a bowling ball then it is to kick a soccer ball

• True 
• False 

Which is easier? pushing an empty shopping cart or a full shopping cart? why? 

• The full one because it has more mass
• The empty one because it has less mass

Mike's car, which weighs 1,000 kg, is out of gas. Mike is trying to push the car to a gas station, and he makes the car go 0.05 m/s/s. Using Newton's Second Law, you can compute how much force Mike is applying to the car
(F= M x A)

• 50 newtons
• 100 newtons 
• 20 newtons 
• 5 newtons

True or false? It is easier to kick a beach ball then it is a basketball

• True 
• False