Second Six Weeks Review

What is the formula for Newton's Second Law of motion

• A = M x F

• F = m x a

• M = F/a

• V = D/T

When doing calculations for an Angular Projectile Motion question what is the first thing that you need to do on your calculator?

Answer explanation

The calculations will be incorrect if the mode is in Radians.

Which law states that for every action there is an equal and opposite reaction?

• 1st Law

• 2nd Law

• 3rd Law

Which law states that an object at rest stays at rest and an object in motion stays in motion unless an unbalanced force acts on it?

• 1st Law

• 2nd Law

• 3rd Law

A teacher taker her vehicle to the gymnasium, after a 30 minute stop there she goes to the grocery store to pick up some food. Which of the following graphs would represent her activity

• 
• 
• 

What is the Normal force?

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A free body diagram will show which of the following?

• All the forces that are acting upon an object.

• Some of the forces that are acting upon an object.

• Only the gravitational pull on an object.

• Only the strongest forces that are acting upon an object.

In this free body diagram which of the following is true?

• The object is moving to the right at 17N.

• The force of gravity is 6N.

• This oject is falling down.

• The force of friction is 3N to the left

A freight elevator is loaded with two packages. One package is 20 kg in weight the second is 30 kg in weight. The elevator has a mass of 100 kg. The elevator has an acceleration of 2 m/s. What is the net forcce that acts on the elevator?

• 500 N

• 25 N

• 300 N

• 200 N

A projectile's path has which of the following characteristics at the top of it's path?

• changes to negative from positive

• Change sfrom postive to negative

• Stays the same

• Is zero