Name

Date

CONCEPTUAL

rrgs/C

CONCEPTUALPRACTICE PAGE

Rule: IF

PRACTICE PAGE

Chapter 2 Newton's First Law of Motion-InertiaThe Equilibrium

Chapter 2 Newton's First Law of Motion-InertiaStatic Equilibrium 1. Little Nellie Newton wishes to be a gymnast and hangs from a variety of positions as shown. Since she is not accelerating. the net lorce on her is zero. That is, 'F O. This means the upward puu 01 the rope(s) equals the downward pUll of gravity. She weighs 300 N. Show the scale readlng(s) for each case.

=0

1. Manuel weighs 1000 N and stands In the middle of a board that weighs 200 N. The ends 01the board rest on bathroom scales. (We can assume the weight of the board acts at its center.) Fill in the correct weight reading on each scale.

850 N

'I.

1. H YO~alSlfep ,:tt"ble anhd ~ tak es off l one" secnn" f) reac th~foor, what Will b e the speed when you meet the floor?

Spud of free fall e ~ckraticn x timex n~mb e r d. as , lOt m.

v = gt ee 10 mJs' x

t

"

5 mJs

=

2. What Will be your averag~ sp~ed of fall? v ~

2._+5

mJ~ " 2.5 mls 2

Distance'

---_.,-

average speed x time.

YOU NUO TO KNOW:IMtaotoMOllSh'Qrt'l

1 em/s

en

The concept that add~ionafly depends on localion in a gravitational field is [mass] ~ [Weight] is a measure of the amount of matter in an object and only depends on the er and kind of atoms thet compose it. [weight] is a measure of "laziness' of an object.

It can correctly be said that ~ [Mass] ~ [Mass] ~

GREYHOUND6AZElLE 'TURTLEAccelerated Motion

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160 m I I