Can anyone give me an example of a free fall problem?

Question

With the object thrown vertically downward. Can you also give the answers? I need some problems so I can review for my upcoming test in Physics...

Maybe something like this:

A ball is thrown vertically upward with a velocity of 25 m/s.

a) How long does it take to reach the highest point?

b) How high does it rise?

c) How long does it stay in the air?

I really need similar problems like that. :D

Thanks!

Answer 1

Try this question:

From the roof of the physics building which is 30 meters above the ground, a golf ball is given an initial speed of 25 m/s and an angle of departure 30 degrees above the horizontal. Neglecting air resistance:

1. How high will the golf ball go?

2. What is the time to reach the highest point?

3. What is the velocity of the golf ball at the highest point?

4. How long will it take the golf ball to strike the ground from release?

5. How far from the foot of the building will the golf ball strike?

6. With what velocity will it strike the ground?

I am sorry, I can't provide you with answers. I have difficulty encoding figures and equations.

Answer 2

A stone is dropped from a height of 8 m above the surface of moon. calculate the time taken for the stone to reach the surface of Moon

(Moon's gravity = 1/6 of earth gravity)

Solution:

   s = ut + 1/2gt^2

   8 =0+1/2 times 1/6 timest ^2

   t = 3.13s