Question

A package weighing 15kg falls from a height of 20 metres. with what velocity does it hit the ground? show all the necessary steps.​

Answer 1

Given :

A package weighting 15kg falls from a height of 20 metres.

To Find :

Velocity of the package when it hits the ground.

Solution :

Since constant acceleration due to gravity acts on the object throughout the motion, equation of kinematics can be applied to solve this question$.$

• For a body falling freely under the action of gravity, g is taken positive.

Here in this question initial velocity of the package is zero hence it is a case of free fall.

Applying third equation of kinematics;

➙ v² - u² = 2gH

• v denotes final velocity
• u denotes initial velocity
• g denotes acc. due to gravity
• H denotes height

By substituting the given values;

➙ v² - 0² = 2(10)(20)

➙ v² = 400

➙ v = √400

➙ v = 20 m/s

Answer 2

Answer:

Thanks for blocking @MagicalWizard You could hv clearly said that you cannot help instead just like other moderators do