« previous next »

Author Question: What is the magnitude of the vertical-velocity component of the rock as it hits the ground? a. 8.81 ... (Read 135 times)

tichca

  • Hero Member
  • *****
  • Posts: 554
on: Jul 28, 2018
What is the magnitude of the vertical-velocity component of the rock as it hits the ground?
 a. 8.81 m/s
  b. 7.39 m/s
  c. 25.8 m/s
  d. 19.3 m/s

Question 2

A projectile is launched at an angle less than 30 and at speed v. Which will increase the projectile's range more, ignoring atmospheric drag?
 a. doubling the launch angle b. increasing the speed of launch by 50
  c. reducing the mass of the projectile d. launching on February 29th


IAPPLET

  • Sr. Member
  • ****
  • Posts: 333
Reply #1 on: Jul 28, 2018
Answer to Question 1

c

Answer to Question 2

b


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Horses need to lie down occasionally, and prefer soft ground for a nap. Horses need to lie down occasionally, and prefer soft ground for a nap.
Great apes knuckle-walk when traveling on the ground. Great apes knuckle-walk when traveling on the ground.
Volcanoes Are Rock Factories Volcanoes Are Rock Factories
Vertical and Horizontal Changes in Pressure Vertical and Horizontal Changes in Pressure
Reaction velocity as a function of substrate concentration Reaction velocity as a function of substrate concentration
Floating rock illusion Floating rock illusion
Video: Congenital Heart Defects Animation

For a complete list of videos, visit our video library