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Chap 14 ECO Review Force

Test Description: Chp 14 forces

Instructions: Answer all questions to get your test result.

1) A force is ....

Aa push/pull or anything that causes a change in motion Ba change in speed and/or direction Ca property of matter that causes things to resist a change in motion Danything that is balanced in motion

2) What is friction?

AWhen two objects interact with each other BA force that slows motion CA property of matter that slows motion DA force applied along a rope

3) Which of the following is NOT a type of friction

Asliding Binertia Cstatic Drolling

4) Friction is caused when ......

Atwo surface areas DO NOT come into contact Bthere is a lubricant on the surface of an object Cgravity force is felt by an object D two surface areas come into contact

5) Which will reduce friction force?

AMake sure that there are plenty of places for two surfaces to make contact BCreate more pressure between two surfaces CRubbing a lubricant between two surfaces DCreate more "hills and valleys" or point of contact between two surfaces

6) Viscous friction is friction in the __, and with air friction _ is NOT possible.

Aair, free fall Bwater, free fall Cwater, acceleration Drope, acceleration

7) The force that allows objects to orbit around a massive object is called

Agravity Bcompression Cnormal Dfriction

8) This measurement will change as you move from one gravitational strength to another

Aforce Bspeed Cweight Dmass

9) The strength of gravity on earth is .....

A9.8 N/kg B9.88888 N/hour C98 N/kg D9.8 km/hour

10) The ___________ of an object will never change.

Agravity Bmass Cshape Dweight

*select an answer for all questions

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