forces:basics

Question 1

state three ways forces can affect bodies.

Answer 1

they can change their:

1) speed
2) direction
3) shape

Question 2

define weight

Answer 2

the name given to the force of gravity on a mass.

Question 3

define electrostatic force

Answer 3

the force between two charges

Question 4

define thrust

Answer 4

a force pushing an object forward (such as the force from a car engine)

Question 5

define air resistance (or drag)

Answer 5

the friction of the air on a moving object.

Question 6

define upthrust

Answer 6

the force of a fluid (such as water) pushing an object upwards (making it float)

Question 7

define compression

Answer 7

forces that are squashing an object

Question 8

define tension

Answer 8

forces that are stretching an object.

Question 9

define reaction force

Answer 9

a force due to contact between two objects.

Question 10

state the 8 types of forces

Answer 10

1) weight
2) electrostatic force
3) thrust
4) air resistance/drag
5) upthrust
6) compression
7) tension
8) reaction force