Forces

Question 1

What is a force

Answer 1

a push or pull that acts on an object due to the interaction with another object

Question 2

how do you find spring constant from force-extension graph of a spring

Answer 2

find gradient of straight-line section

Question 3

what is elastic and inelastic deformation

Answer 3

when an object can go back to its original shape + size after deforming forces removed
when an object does not go back to original shape

Question 4

what is centre of mass

Answer 4

point through which the weight of an object can be considered to act

Question 5

name for force acting on an object due to gravity

Answer 5

weight

Question 6

what is the resultant force when an object’s forces are balanced

Answer 6

0N

Question 7

what is different about the interaction pair of forces when 2 object interact

Answer 7

forces in opposite directions

Question 8

what is the same about the interaction pair of forces when 2 objects interact with each other

Answer 8

forces are the same size

Question 9

what is a non-contact forces and give 3 examples

Answer 9

when objects are physically separated
-gravitational force
-electrostatic force
-magnetic force

Question 10

what is a contact force and give 4 examples

Answer 10

when objects are physically touching
-friction
-air resistance
-tension
-normal contact force

Question 11

is force scalar or vector

Answer 11

vector

Question 12

what is a scalar and vector quantity

Answer 12

scalar= only size (magnitude)
vector= both size and direction