« previous next »

Author Question: A stone is thrown at an angle of 30 above the horizontal from the top edge of a cliff with an ... (Read 45 times)

jjjetplane

  • Hero Member
  • *****
  • Posts: 556
on: Jul 28, 2018
A stone is thrown at an angle of 30 above the horizontal from the top edge of a cliff with an initial speed of 14 m/s. A stop watch measures the stone's trajectory time from top of cliff to bottom to be 7.1 s. What is the height of the cliff? Note: g = 9.8 m/s2 and air resistance is negligible.
 a. 58 m
  c. 120 m
  b. 114 m
  d. 197 m

Question 2

A ball is rolled horizontally off a table with an initial speed of 0.18 m/s. A stopwatch measures the ball's trajectory time from table to the floor to be 0.30 s. How far away from the table does the ball land? Note: g = 9.8 m/s2 and air resistance is negligible.
 a. 0.054 m
  c. 1.2 m
  b. 0.072 m
  d. 1.9 m


at

  • Sr. Member
  • ****
  • Posts: 359
Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

There are 20 feet of blood vessels in each square inch of human skin.

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Did you know?

Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

Did you know?

Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

Kidney stone. Kidney stone.
Intradermal injections are administered at a 10–15° angle. Intradermal injections are administered at a 10–15° angle.
Vertical and Horizontal Changes in Pressure Vertical and Horizontal Changes in Pressure
Longitudinal and horizontal effleurage to the thigh. Apply with medium pressure to warm tissues. Longitudinal and horizontal effleurage to the thigh. Apply with medium pressure to warm tissues.
A sled having a certain initial speed on a horizontal surface comes to rest after traveling 10 ... A sled having a certain initial speed on a horizontal surface comes to rest after traveling 10 ...
Video: Introduction to Human Immunodeficiency Virus (HIV)

For a complete list of videos, visit our video library