vectors

what is newtons first law

• Every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.

• The law defines a force to be equal to change in momentum (mass times velocity) per change in time.

• states that for every action (force) in nature there is an equal and opposite reaction.

• An object with a constant mass m, the first law states that the force F is the product of an object's mass and its acceleration a:

• A

• B

• C

• D

• 200 X 10 / 90 X 4

• 200 X 4 / 90 X 10

• 200 X 4 X 90 /10 X 200 X 4

• 10 X 200 X 4 /200 X 4 X 90

note the NOT

• A

• B

• C

• D

• A

• B

• C

• D

• A

• B

• C

• D

• A

• B

• C

• D

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Which one of these does not show an example of Tip to Tail method?

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What's the x-component of the following vector (13 m/s , 55°)

• 10.64 m/s

• 0.28 m/s

• 7.45 m/s

• 20 m/s