This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A rock is thrown downward from an unknown height above the ground with an initial speed of 10 m/s. ... (Read 65 times)

formula1

  • Hero Member
  • *****
  • Posts: 666
on: Jul 28, 2018
A rock is thrown downward from an unknown height above the ground with an initial speed of 10 m/s. It strikes the ground 3.0 s later. Determine the initial height of the rock above the ground.
 a. 44 m
  b. 14 m
  c. 74 m
  d. 30 m
  e. 60 m

Question 2

A toy rocket, launched from the ground, rises vertically with an acceleration of 20 m/s2 for 6.0 s until its motor stops. Disregarding any air resistance, what maximum height above the ground will the rocket achieve?
 a. 1.1 km
  b. 0.73 km
  c. 1.9 km
  d. 0.39 km
  e. 1.5 km


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Silverbeard98

  • Sr. Member
  • ****
  • Posts: 355
Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

A


formula1

  • Hero Member
  • *****
  • Posts: 666
Reply #2 on: Jul 28, 2018
TY


Silverbeard98

  • Sr. Member
  • ****
  • Posts: 355
Reply #3 on: Jul 28, 2018
You're welcome


« previous next »
 

Did you know?

Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

Did you know?

Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

Did you know?

Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

Did you know?

Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

An example of layers, or strata, of sedimentary rock that contain fossils An example of layers, or strata, of sedimentary rock that contain fossils
Normal development of posture and spinal curves. (A) Toddler: Protruding abdomen; lumbar lordosis. ( Normal development of posture and spinal curves. (A) Toddler: Protruding abdomen; lumbar lordosis. (
Success, You Rock, Achievement Success, You Rock, Achievement
Due to compressibility, atmospheric mass gradually “thins out” with height. Due to compressibility, atmospheric mass gradually “thins out” with height.
Speed of Convergence to the Steady State Speed of Convergence to the Steady State
Adolescent girls reach adult height sooner than boys because their bones grow more rapidity Adolescent girls reach adult height sooner than boys because their bones grow more rapidity
Video: Exocytosis - secretion

For a complete list of videos, visit our video library