Newton's Laws

Question 1

What is Force?

Answer 1

push or pull one object with mass to change its velocity.

Question 2

What is a Net Force?

Answer 2

The combining of forces when two or more forces act on an object. Like when 2 people are pushing on a block.

Question 3

What is a Balanced Force?

Answer 3

forces that are equal in size and opposite direction

Question 4

What is an Unbalanced Force?

Answer 4

forces that are not equal in size and go in the same direction

Question 5

What is Newton’s 1st law?

Answer 5

an object will move at a constant velocity until a net force acts on it. Like it will keep moving till something stops it.

Question 6

What is another name for Newton’s 1st law?

Answer 6

Law of inertia

Question 7

What is Inertia?

Answer 7

the tendency of an object to resist a change in motion
The more mass something has the more inertia

Question 8

The greater the ____ pushing the tow objects together, the greater the ____

Answer 8

1- FORCE
2- FRICTION

Question 9

what are the 3 types of friction?

Answer 9

Static Friction
Sliding friction
rolling friction

Question 10

Resistance an object feels when flying in the air

Answer 10

Air resistance

Question 11

What is air resistance determined by?

Answer 11

Speed
- greater the sped greater resistance
Size
- the larger the object the greater the resistance
Shape
- the flatter the object the greater the resistance

Question 12

An invisible force that pull 2 two objects together

Answer 12

Gravity

Question 13

Law of Universal Gravitation

Answer 13

any 2 masses exert an attractive force on each other

Question 14

How fast does gravity make all falling objects go

Answer 14

9.8m/s

Question 15

What is terminal velocity?

Answer 15

maximum velocity a falling object will reach
occurs when the force of gravity and air resistance become balanced

Question 16

The more force you give the greater the acceleration

Answer 16

Newton’s 2nd Law

Question 17

what is force formula

Answer 17

F=ma

Question 18

You are pushing a friend on a sled, you push with a force of 40N. Your friend and the sled together have the mass of 80kg. Ignoring friction what is the acceleration of your friend on the sled?

Answer 18

a= .5m/s2

Question 19

How do you find the weight of something that is in kg?

Answer 19

KG x 9.8 = ___

Question 20

What is Newton’s 3rd law of motion?

Answer 20

every action has a equal and opposite reaction

Question 21

p=mv

Answer 21

formula for momentum

Question 22

What is the momentum of a car with a mass of 1300kg traveling at a speed of 28m/s

Answer 22

36,400

Question 23

18- D
20- D
25-A
30- B
31- V=IxR
32-A
33- A
34-C
35-B
39- Control group- Litter B
47- correct
48- Newtons 1st law
53- joules
54- Joules
58 stores chemical energy and converts it to electrical energy.
60- add up ohms, I=V/R
69-129Hz

Answer 23

54- joules
58-stores chemical energy and converts it to electrical energy.
60- add all ohms, divide the V by the added-up ohms
69- 129HZ