Ezy velocity questions Please help me im desperate

[Idrees]

Ezy velocity questions! Please help me // I am desperate!

Homework Statement

a)How long does it take an object to fall from a height of 20 m to reach the ground?

b)if an object is launched horizontally from a height of 20 m with a velocity of 2/m/s where will it hit the ground?

Homework Equations

we can use the velocity /a cceraltion forumulas

The Attempt at a Solution

is part a correct?? i think 20/ 9.8 m/s because its falling vertically which = 2.04 seconds

but part b I am not sure?

 

[rl.bhat]

The first part is wrong.

Write down the relevant equations.

 

[Idrees]

The first part is wrong.

Write down the relevant equations.

The relevant equation will be okay the equation for velocity

velocity= distance / time

we have been given the distance which is 20 m, and were trying to find time , ??

 

[rl.bhat]

It is true only the velocity is uniform. In a freely falling body the velocity is not constant.
Go through the other kinematic equation for accelerating bodies.