Free Fall and gravitational acceleration

[tgilli]

Homework Statement

A ball is dropped from 1.5 y(m) and hits the ground in .54 t(s). What is the value of g (m/s^2)?

The accepted value of g = 9.8m/s^2

Homework Equations

y=1/2gt^2

The Attempt at a Solution

I'm getting this wrong, but this is my attempt.

1.5 = 1/2g x .54^2
1.5 = 1/2 x .292
1.5 = .146
.146 / 1.5 =

10.27 g (m/s^2)

10.27 g (m/s^2) is close, but not correct. The correct answer is 10.29 m/s^2

Clarification would be appreciated.

 

[LowlyPion]

Homework Statement

A ball is dropped from 1.5 y(m) and hits the ground in .54 t(s). What is the value of g (m/s^2)?

The accepted value of g = 9.8m/s^2

Homework Equations

y=1/2gt^2

The Attempt at a Solution

I'm getting this wrong, but this is my attempt.

1.5 = 1/2g x .54^2
1.5 = 1/2 x .292
1.5 = .146
.146 / 1.5 =

10.27 g (m/s^2)

10.27 g (m/s^2) is close, but not correct. The correct answer is 10.29 m/s^2

Clarification would be appreciated.

Calculate the expression with more precision. I get 10.288

 

[tgilli]

Calculate the expression with more precision. I get 10.288

Got it and understand. Thanks.