A bungee jumper attains a speed of 30 m/s just as the bungee cord begins to stretch. If the period of stretch is 2 s while coming to a halt, the jumper’s average deceleration is about (g is the gravitational acceleration)A) 0.5 g.B) g.C) 1.5 g.D) 2 g.

Danny Diver weighs 500 N and steps off a diving board 10 m above the water. Danny hits the water with kinetic energy ofA) 10 J.B) 500 J.C) 510 J.D) 5000 J.E) more than 5000 J.

Write a conclusion for the short story analysis. This should be at least 100 words.

A feather and a coin dropped in a vacuum fall with equalA) forces due to gravity.B) accelerations.C) kinetic energies.D) none of these

A 5000-kg freight car collides with a 10,000-kg freight car at rest. They couple upon collision and move at 2 m/s. What was the initial speed of the 5000-kg car?A) 4 m/sB) 5 m/sC) 6 m/sD) 8 m/sE) none of the above 

A piece of taffy slams into and sticks to an identical piece of taffy at rest. The momentum of the combined pieces after the collision is the same as before the collision, but this is not true of the kinetic energy, which partly degrades into heat. What percentage of the kinetic energy becomes heat?A) 0%B) 25%C) 50%D) 75%E) need more information

Biological factors are everything that makes up the organism that affects growth.

_____________________ factors are everything outside the organism that affects growth.

Crops need to be protected from temperature and water changes. 

Grading systems encourage the production of higher quality products in the green industries.