Question

A Formula for calculating displacement (distance from a point) is -


`s = ut + (1)/(2) {at}^(2)`
A) Calculate u when s = 120, a = 2 and t = 4​

Answer 1

s=ut +atsq/2

120=4u+4sq

4u=104

u=26m/sec

Answer 2

26 m/s

Explanation:

Given

`s = ut + (1)/(2) {at}^(2)`

When a = 2 , s = 120 and t = 4

Then

[tex]120 = u \times 4 + \frac{1}{2} \times 2 \times {4}^{2} \\ 120 = 4u + 16 \\ 120 - 16 = 4u \\ 104 = 4u \\ u = \frac{104}{4} \\ u \: = 26

Hope it will help :)❤