Science

Question 1

Force-

Answer 1

push or pull by any one object on another

Question 2

what do you call the different units of force?

Answer 2

Newtons and Pounds

Question 3

thrust-

Answer 3

engines that push or pull a plane forward

Question 4

lift-

Answer 4

force that pulls a plane into the air

Question 5

drag-

Answer 5

pull that slows a plane down

Question 6

friction-

Answer 6

force that opposes the motion of an object moving past another

Question 7

gravity-

Answer 7

the force of attraction between any two objects due to mass

Question 8

air resistance-

Answer 8

object moves through air, air hits it and it slows down

Question 9

Newton’s 1st Law

Answer 9

an object at rest will remain at rest, and an object in motion will continue in motion with the same speed and direction unless acted upon by a force

Question 10

Newton’s 2nd Law

Answer 10

the force acting on an object is equal to its mass times its acceleration (F=ma)

Question 11

Newton’s 3rd Law

Answer 11

every action had an equal and opposite reaction

Question 14

unbalanced force-

Answer 14

a force that causes an object to change its motion

Question 15

balanced force-

Answer 15

when forces act on an object w/o changing its motion

Question 16

acceleration-

Answer 16

a force that increases when your force increases as long as your force is not also changing

Question 17

action force-

Answer 17

the initial push or pull of one object on another object

Question 18

reaction force-

Answer 18

the push or pull of a second object back on the object that started the push or pull

Question 19

sir Isaac newton-

Answer 19

a person who studied balanced and unbalanced forces; wrote newton’s laws

Question 20

Describe and list the forces action on a moving car and how they affect the car.

Answer 20

-friction; slows down car and prevents car from sliding
-driving force; keeps car moving (must be larger than gravity and friction- in order for car to move)
-gravity; pulls car down and keeps it from floating up into the air

Question 21

How do forces affect motion?

Answer 21

Forces determine weather an object will move forward backward or just stay still. For example if a car in motion was not being forced forward it would remain a balanced object but if a force like the wind pushes it forward it will become an unbalanced object and be in motion until forced to stop.

Question 22

How could working underwater help astronauts practice for being in space?

Answer 22

They will not move or stop moving unless acted upon by an unbalanced object, and forced in a different direction. This will help them to prepare them for their time in space, not able to easily move alone.

Question 24

How does newton’s first law help explain how seat belts prevent injuries in car accidents?

Answer 24

Seat belts are a balanced object and are strong enough to prevent you, an unbalanced object for jerking forward.