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 106 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?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

The human body produces and destroys 15 million blood cells every second.

Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

An Enzyme in Action Enzymes speed up reactions in your body An Enzyme in Action Enzymes speed up reactions in your body
Packaging materials like zip-close bags, egg cartons, and takeout containers should be thrown away Packaging materials like zip-close bags, egg cartons, and takeout containers should be thrown away
Nurse measuring the recumbent height of a toddler Nurse measuring the recumbent height of a toddler
Similar Rock Outcrops on Mars and Earth Similar Rock Outcrops on Mars and Earth
A 2-kg box of taffy candy has 40 J of potential energy relative to the ground. Its height above ... A 2-kg box of taffy candy has 40 J of potential energy relative to the ground. Its height above ...
Mass spectrometry for identifying an unknown protein isolated from a 2D gel Mass spectrometry for identifying an unknown protein isolated from a 2D gel
Video: Integumentary Anatomy

For a complete list of videos, visit our video library