Mechanics Test

Question 1

formula for speed

Answer 1

speed = distance / time

Question 2

formula for force

Answer 2

force = mass x acceleration

Question 3

formula for moment

Answer 3

moment = force x perpendicular distance from turning point

Question 4

formula for work

Answer 4

work = force x distance moved in direction of force

Question 5

formula for gravitational potential energy

Answer 5

gravitational potential energy = mass x gravitational field strength x height

Question 6

formula for kinetic energy

Answer 6

kinetic energy = 0.5 x mass x velocity squared

Question 7

formulas for power

Answer 7

power = work done / time taken
OR
power = energy transformed / time taken

Question 8

what is the unit for speed

Answer 8

meters/second

Question 9

what is the unit for distance

Answer 9

meters

Question 10

what is the unit for time

Answer 10

second

Question 11

what is the unit for force

Answer 11

newton

Question 12

what is the unit for mass

Answer 12

kg

Question 13

what is the unit for acceleration

Answer 13

meters/second squared

Question 14

what is the unit for moment

Answer 14

newton meter

Question 15

what is the unit for work

Answer 15

joule

Question 16

what is the unit for power

Answer 16

watt