Thank you Ann (kinematics)

posted by .

Thank you Ann!

I had the equations and really was closing in on the answer... (stopping for 23 s is what really got me confused) in either case, the displacement for a) is 888 m !
Now I'll try to calculate (b).
Thank you much!

P.S. This is in response to my earlier physics (kinematics) questions.

A more pressing problem for which I have tried over and over again, with no results. I'm able to solve harder problems, but sometimes falter at really easier ones (depressing, I know). Here it is:

section Density and Atomic Mass

A major motor company displays a die-cast model of its first automobile, made from 9.35 kg or iron. To celebrate its hundredth year in business, a worker will recast the model in gold from the original dies. What mass of gold is needed to make the new model?

Look up the density of iron.
mass = volume x density.
You have the mass and density and you calculate volume of iron.

Then look up the density of gold.
mass = volume x density
Solve for mass. You have the volume from the previous calculation.

Gold: Density @ 293 K: 19.32 g/cm3
Atomic Mass: 196.96655 amu

Iron: Atomic Mass: 55.845 Amu
Density: 7.86

Density is mass per unit volume. The average density of an object equals its total mass divided by its total volume. The atomic mass of a chemical element is the mass of an atom at rest.

So for example, a statue made out of gold will be heavier than a statue made of iron because gold has a higher density.
density = mass / volume

watch your signs, density here is given in grams.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics (Kinematics)

    A motorist drives north for 35.0 s at 25.0 m/s and then stops for 23.0 s. He then continues north traveling 13.0 m in 2.00 s. (a) What is his total displacement?
  2. Physics

    Ann is driving down a street at 58 km/h. Suddenly a child runs into the street. If it takes Ann .71 s to react and apply the brakes, how far will she have moved before she begins to slow down?
  3. Spanish for John

    SINGLE OBJECT PRONOUNS = UN COMPLEMENTO SIMPLE DIRECT-OBJECT PRONOUNS: Ana no me visita. = Ann does not visit me. Ana no te visita. = Ann does not visit you (fam.) Ana no le visita = Ann does not visit him, you (ONLY IN SPAIN), otherwise: …
  4. simple equations ( math)

    Divide 300 cards between Ann and Elizabeth so that Ann has 5 times as many as Elizebeth's cards
  5. Math

    Consider a game where Ann and Bob play against each other in a dice game, Ann wins if her score is higher than Bob's, Bob wins if his score is higher or if the scores are the same. What is the probability of Ann winning?
  6. Math

    Ann had $198 more than her sister. After their mother gave Ann $20 and her sister $60, Ann had twice as much money as her sister. How much money did Ann have at first.
  7. Math

    Ann has $198 more than her sister. After her mom gives Ann $20 and her sister $60, Ann has twice as much money as her sister. How much money did Ann have at first?
  8. English

    1. Ann commanded/ordered that he (should) go there. 2. Ann suggested/proposed that he should join the club. 3. Ann insisted that he (should) wash the car. 4. Ann requested that he (should) go see a doctor. 5. Ann decided/determined …
  9. English

    1. When Ann got the job, her parents walked on air. 2. When Ann got the job, her parents was on cloud nine. 3. When Ann got the job, her parents were very happy. 4. When Ann got the job, her parents were walking on air. =================== …
  10. math

    Ann bob and cindy had some money. Ann had 20% of the total of the three kids.Bob's amount is 50% of the total amount of ann's and cindys. if cindy has $48 more than bob, how much money does cindy have?

More Similar Questions