P9 Forces

Question 1

what is scalar quantity

Answer 1

only has magnitude

Question 2

what is vector quantity

Answer 2

has magnitude and direction

Question 3

example of a scalar quantity

Answer 3

distance
speed

Question 4

example of a vector quantity

Answer 4

velocity
force

Question 5

what is a force?

Answer 5

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

Question 6

what is contact force?

Answer 6

when objects are physically touching

Question 7

example of a contact force

Answer 7

friction
air resistance
tensiom

Question 8

what is non contact force?

Answer 8

when objects are physicallu seperated

Question 9

example of a non contact force

Answer 9

gravitational
electrostatic
magnetic

Question 10

what is the size of resultant force on an object when forces are balanced?

Answer 10

ZERO

Question 11

name for force acting on an object due to gravity

Answer 11

weight

Question 12

what instrument can be used to measure weight of an object?

Answer 12

newtonmeter

Question 13

what is inelastic deformation?

Answer 13

object cannot go back to original shape and size when deforming forces are removed

Question 13

what is elastic deformation?

Answer 13

when an object can return to its orignal shape and size when deforming forces are removed

Question 14

how do you find spring constatnt from a force extension graph of a spring?

Answer 14

find gradient of straight line section

Question 15

what is turning effect of a force called?

Answer 15

a moment

Question 16

how does a level reduce force needed for a moment?

Answer 16

by increasing distance from pivot

Question 17

what is earths gravitational field strength?

Answer 17

9.8