Exploring Physics Chapters 1-4

Question 1

Physics is the science that explores how energy acts on

Answer 1

matter

Question 2

the tab on a soft drink can is an example of

Answer 2

lever

Question 3

Acceleration is found by dividing the

Answer 3

change in speed by the change in time

Question 4

To study the motion of falling objects, Galileo

Answer 4

rolled them down a ramp

Question 5

a = f/m

Answer 5

second law of motion

Question 6

I = f x t

Answer 6

definition of impulse

Question 7

A feather and lump of lead will fall at the same speed in

Answer 7

vacuum

Question 8

f = m x a

Answer 8

force equation

Question 9

To calculate speed, divide distance by

Answer 9

1time

Question 10

Kepler proved that planets traveled in orbits that were

Answer 10

elliptical

Question 11

Momentum is the mass of an object times its

Answer 11

velocity

Question 12

Force of gravitational attraction between two objects is directly proportional to the ___ of their masses and inversely proportional to the ___ of the distance separating them.

Answer 12

product, square

Question 13

The Greek who said, “Give me a place to stand and a long enough lever, and I can move the world” was

Answer 13

Archimedes

Question 14

If f = 0 then a = 0

Answer 14

first law of motion

Question 15

To calculate speed, divide distance by

Answer 15

time

Question 16

Label the four forces acting on an airplane in flight.

Answer 16

Question 17

f_ab = -f_ba

Answer 17

third law of motion

Question 18

Label the fulcrum, load, and effort points on the nutcracker.

Answer 18

Question 19

Inertia is a property of matter that resists changing its

Answer 19

velocity

Question 20

State the second law of motion

Answer 20

The acceleration of an object is directly proportional to the force acting on it and inversely proportional to its mass.

Question 21

p = m x v

Answer 21

definition of momentum

Question 22

Label the fulcrum, load, and effort points on the seesaw.

Answer 22