Ch 11.2 Force And Mass Determine Acceleration.

(page 353)  Gather 15 paper clips and a string and complete the assignment "How are force and acceleration related?"  Answer both the "What do you think?"

Write down Newton's second law.

What three concepts are involved in Newton's second law?

(354)  What do the arrows represent in the drawings?

Write down the formula for calculating newton's second law

The unit representing force is the __________?

Solve this problem.  An object having a 5 kg mass and 4m/s2 acceleration will have ______ N force.

Solve this problem An object with 30kg mass and 7 m/s2 acceleration will have _____ N force.

Solve this problem.  An object with 30000g mass and 5m/s2 will have ____N force.

Solve this problem.  An object with a force of 20 N and having an acceleration of 10 m/s2 will have _____kg mass.

Solve this problem. An object with a force of 30 N and having an accerleration of 3 m/s2 will have a _______kg mass.

Solve this problem.  An object with a Force of 20N and a mass of 2kg will have _____ m/s2 of acceleration.

If the same force is applied to objects of different mass, which object will have the greater acceleration?

(357)  Forces can change the ______ of motion.

Any ______ that keeps an object moving in a circle is known as a centripetal force.

Write down the definition of centripetal force.

If the forces acting upon an object is increased, what happens to the objects acceleration?

How does the mass of an object affect its acceleration?

What force keeps and object moving in a circle?

Carlos pushes a 3kg box with a force of 9N.  THe force of friction o nthe box is 3N in the opposite direction.  What is the acceleration on the box?