Question

Given the formula v=u+at, find:
a) u if v=24, a=5 and t=3
b)t if v=39, u=15 and a=8

simply working out please thanks

Answer 1

this is just plug and chug math plug it intoa calculator if you dont want to do the pencil work

Answer 2

i dont understand

Answer 3

Please don't listen to that idiot. First you have to isolate u. Substract at from both side to get v - at = u. Here you can replace the variables by their numerical values, so you get:

24 - (5*3) = u
24 - 15 = u
u = 9

Answer 4

Can you do part b using similar steps?

Answer 5

hey i am not an idiot

Answer 6

he was talking about me not you, and neither am i

Answer 7

sorry i dont or understand

Answer 8

he was talking about me when he said "dont listen to that idiot"

Answer 9

i get it know what about b) t if v=39, u=15 and a=8

Answer 10

its the same proccess just plug in the numbers for the variables and solve for what ever is left

Answer 11

at means a x t, so just fit in the values into the equation... v = u + at, so fit in the values,
39 = 15 + 8t --> 39 - 15 = 8t --> 24 = 8t --> 8t = 24 --> t = 24/8 --> t = 3 --> :)

Answer 12

i get this one but b

Answer 13

sorry, wat do u mean by b? isn't that wat u needed?

Answer 14

t if v=39, u=15 and a=8

Answer 15

umm, i just answered b

Answer 16

no u didn't