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unit 8 section 3.1 part II-A

Total questions: 26

Worksheet time: 16mins

Name
Class
Date
1.

an attractive force between any two objects that depends on the masses of the objects and the distance between them

a)

gravity

b)

weight

c)

freefall

d)

terminal velocity

2.

a measure of the gravitational force exerted on an object

a)

gravity

b)

weight

c)

freefall

d)

terminal velocity

3.

when air resistance and weight (force of gravity) are equal, the object stops accelerating and reaches its maximum velocity

a)

gravity

b)

weight

c)

freefall

d)

terminal velocity

4.

in the absence of air resistance, all objects falling near earth's surface accelerate at the same rate regrdless of their mass

a)

gravity

b)

weight

c)

freefall

d)

terminal velocity

5.

gravity acts on all objects with ____

a)

weight

b)

mass

c)

9.8 m/s2 acceleration

d)

acceleration

6.

what equation summarizes the universal law of gravitation?

a)

w = mg

b)

Fg = m1m2/d2

7.

___ objects in the universse attract each other through the force of gravity

a)

all

b)

no

8.

the gravitational force ___________ proportionally as one/both masses increase

a)

decreases

b)

increases

9.

where would you weigh less: at sea level or at the top of a tall mountain?

a)

sea level

b)

mountain

10.

if mass increases, the force of gravity

a)

increases

b)

decreases

11.

if distance increases, the force of gravity

a)

increases

b)

decreases

12.

(when using mass) to find the force, ____ the mass

a)

divide

b)

subtract

c)

add

d)

multiply

13.

(when using distance) to find the force, ____ the distance and take the _____

a)

half; whole number

b)

square; reciprocal

c)

square; whole number

d)

half; reciprocal

14.

acceleration due to gravity on earth

(a)  

15.

weight is a _____ quantity

a)

scalar

b)

vector

16.

formula for weight

(a)  

17.

mass ____ affected by gravity

a)

is

b)

is not

18.

free fall acceleration for an object is directed toward the _____ of the earth

a)
center
b)
sky
c)
north
d)
moon
19.

1 pound = (a)   N

20.

acceleration remains ______ for the entire freefall

a)

different

b)

constant

21.

as an object falls, the distance traveled _______ each second

a)

increases

b)

decreases

22.

when an object reaches terminal velocity, both forces are ______ and the object _______.

a)

balanced

b)

unbalanced

c)

accelerates

d)

no longer accelerates

23.

air resistance acts on falling objects in the opposite direction of their motion _______.

a)

sideways

b)

upwards

c)

downwards

24.

air resistance =

(a)  

25.

objects with ______ surface area experience more air resistance.

a)

larger

b)

smaller

26.

the amount of air resistance that affects the object depends on the ___________, _________, and ________

(a)