Quiz 2a (10.01.2020)

Question 1

Acceleration is directly proportional to ___

Answer 1

net force

Question 2

to increase the acceleration of an object, increase the ____

Answer 2

net force acting on it

Question 3

the force of friction depends on the ____

Answer 3

kinds of material and how much they are pressed together

Question 4

The force of friction is due to ____

Answer 4

tiny surface bumps and to “stickiness” of the atoms on a material’s surface

Question 5

the force of friction can occur with ______

Answer 5

sliding objects, water, and in air

Question 6

What is mass?

Answer 6

the quantity of matter in an object, also the measure of the inertia or sluggishness that an object exhibits in response to any effort made to start it, stop it, or change its state of motion in any way

Question 7

What is weight?

Answer 7

usually the force upon an object due to gravity

Question 8

___ is the measure of inertia of a material object. It is independent of gravity. Greater intertia => greater mass.

Answer 8

Mass

Question 9

What is the unit of measurement for mass?

Answer 9

kilogram (kg)

Question 10

___ is usually the force on an object due to gravity.

Answer 10

Weight

Question 11

What is the scientific unit of force?

Answer 11

Newton (N)

Question 12

If the mass of an object is halved, the weight of the the object is ____

Answer 12

halved

Question 13

Weight and mass are ________ to each other

Answer 13

directly proportional

Question 14

____ is more fundamental

Answer 14

mass

Question 15

Weight of an object on the moon is ______ on Earth

Answer 15

less than

Question 16

I kilogram = ____ Newtons

Answer 16

10 (9.8 to be precise)

Question 17

1 kilogram = ____pounds at Earth’s surface

Answer 17

2.21

Question 18

1 pound = ____ Newtons

Answer 18

4.45

Question 19

The same force applied to twice the mass produces ___ the acceleration

Answer 19

half

Question 20

3 times the mass, produces ___ the acceleration

Answer 20

1/3

Question 21

Acceleration is ______ to mass

Answer 21

inversely proportional