Dropping a Humvee

Watch the video about dropping a Humvee and read the information in the article then answer questions below.

1. What other vehicles, in addition to Humvees, does the US Army drop? ______________ and __________________

2. How high is a plane when they do a heavy airdrop? ______________

3. How fast is a plane flying when they do a heavy airdrop in mph? ____________________

4. There are actually 3 different sets of parachutes used in a drop.

1. What is a drogue and what does it do? _________________________________________

2. How big is the extraction chute? _________________________________________________

3. When do the primary chutes deploy? _______________________________________________

5. Landing speed is 24 to 25 feet per second. How much is that in miles per hour? ________
(Google convert feet per second to miles per hour and type in the numbers)

6. Do you think it would cause damage to a vehicle to hit something hard at that speed? _______

7. How many layers of honeycomb are under the vehicle? _________

8. How many layers of honeycomb should be crushed in a worst case scenario where the Humvee is impacting at 28.5 feet per second. _______ How many miles per hour is that? _____

9. What is the cushioning made of? ___________________________________________________

10. Where does the cushioning go? ___________________________________________________

11. How strong is the honeycomb? ___________________________________________________

Skydiving without a parachute and surviving

Watch the video on how a skydiver landed safely without a parachute. Read the article about it and answer the questions.

1. How high did the skydiver jump from (in feet)? _______________________

2. How long did he fall? ___________________________

3. How big was the net he fell into? _________________

4. Without a parachute, how fast would a skydiver would fall? __________

5. To slow down, a skydiver can spread their limbs to increase surface area. How fast will they go then? ________________

6. How did Aikins' smart helmet help make the jump safe? __________
_________________________________________________

7.  How does a falling skydiver steer his body toward a target on the ground?________________________________________________

8. What kind of energy does a skydiver falling at high speed have? ______________

9. What is the net made of ?_____________________________

10. ON YOUR OWN: What kinds of tests do you think they needed to do before the jump to be sure it was safe? List at least 3: