Forces

Question 1

What is the symbol for forces?

Answer 1

F

Question 2

What type of forces are there?

Answer 2

Push, pull or twist.

Question 3

What units are forces in?

Answer 3

Newtons.

Question 4

Forces can cause an object to change…

Answer 4

Speed, direction or shape.

Question 5

Forces can be

Answer 5

Non-contact and contact.

Question 6

Contact forces can be.

Answer 6

Applied(push or pull)
friction(rubbing)
Buoyancy(floating)

Question 7

Non-contact forces can be.

Answer 7

Gravity.
Electrostatic(charged objects)
Magnetic

Question 8

What is gravitation?

Answer 8

The force of attraction between two bodies​

Question 9

What is gravity?

Answer 9

Earth’s pull on a body lying or near the surface of the earth.

Question 10

What is mass?

Answer 10

The amount of matter that makes up an object (never changes)

Question 11

What is a Vector?

Answer 11

And arrow with magnitude and direction.

Question 12

If forces are balanced then…

Answer 12

There will be no movement or the object will move at a constant speed

Question 13

If the forces​ are unbalanced then…

Answer 13

There is movement.

Question 14

What is the law of inertia?

Answer 14

Stationary objects will remain stationary unless acted upon by a force.

Question 15

What is the second law of Newton’s laws of motion?

Answer 15

An object accelerates in the direction of net force

Question 16

What is buoyancy?

Answer 16

Ability of the fluid to exert an upward pressure​

Question 17

What is surface tension?

Answer 17

And upward force on water that causes surface of the water to act like cling wrap.

Question 18

Friction causes __________ to jump off substances which cause an imbalance of charges.

Answer 18

Electrons​

Question 19

What is friction?

Answer 19

Something that opposes motion and produces heat​

Question 20

What is Newton’s third law?

Answer 20

For every action there is an equal and opposite reaction.

Question 21

Friction _________ with surface area.

Answer 21

Increases​

Question 22

What piece of equipment do we use to measure forces?

Answer 22

Spring balance.

Question 23

In magnetism:

Answer 23

Opposite attract and likes repel

Question 24

Static electricity happens when

Answer 24

opposite charges are attracting between objects.

Question 25

Newtons 2nd law equation

Answer 25

F=ma
Force=mass x acceleration

Question 26

acceleration is directly ________ to Net force

Answer 26

proportional