Question

g Using the available equations in your lab manual , what is the acceleration of an object when it hits the ground if that object is thrown from a building 100 meters above the ground, with an initial velocity of 10 meters per second (10M/S), and a flight time of 5 seconds (assume no friction)

Answer 1

Answer:

The acceleration of an object is 4 m/s².

Explanation:

The object is thrown from a building 100 meters above the ground, with an initial velocity of 10 meters per second and a flight time of 5 seconds.

It is required to find the acceleration of the object. Let a is the acceleration. Using second equation of kinematics to find it as :

$h=ut+\dfrac{1}{2}at^2\\\\100=10(5)+\dfrac{1}{2}a(5)^2\\\\100=50+\dfrac{1}{2}\times 25a\\\\50=\dfrac{25a}{2}\\\\a=\dfrac{100}{25}=4\ m/s^2$

So, the acceleration of an object is 4 m/s².