Error in this projectile q? (1 Viewer)

[emilios]

the solutions just say "use v^2 = u^2 + 2as" and then give the value of 7.1m. However isnt the answer supposed to be closer to 8.1 after accounting for the the initial height (it wasn't thrown from the ground)

 

[emilios]

bump

 

[Kurosaki]

Yeah it's wrong. According to my calculator, even if you ignore adding the 0.8m, the height of the ball (above the line thing) is 7.3m to 1 decimal place. Nice rounding!

 

[emilios]

LOL thank you. I hate these dodgy sources, cause of so much anxiety (lel gg if u cant do projectile)