Bob, of mass m, drops from a tree limb at the same time that Esther, also of mass m, begins her ...

Author Question: Bob, of mass m, drops from a tree limb at the same time that Esther, also of mass m, begins her ... (Read 57 times)

neverstopbelieb

Hero Member
Posts: 534

on: Jul 28, 2018

Bob, of mass m, drops from a tree limb at the same time that Esther, also of mass m, begins her descent down a frictionless slide. If they both start at the same height above the ground, which of the following is true about their kinetic energies as they reach the ground?
1.Bob's kinetic energy is greater than Esther's.
2.Esthers kinetic energy is greater than Bob's.
3.They have the same kinetic energy.
4.The answer depends on the shape of the slide.

Question 2

Three identical balls are thrown from the top of a building, all with the same initial speed. The first ball is thrown horizontally, the second at some angle above the horizontal, and the third at some angle below the horizontal as in the figure below. Neglect air resistance, rank the speeds of the balls as they reach the ground, from fastest to slowest.

scikid

Sr. Member
Posts: 300

Reply #1 on: Jul 28, 2018

Answer to Question 1

3

Answer to Question 2

Need homework help now?

Ask unlimited questions for free

Ask a Question

neverstopbelieb

Hero Member
Posts: 534

Reply #2 on: Jul 28, 2018

Both answers were spot on, thank you once again

scikid

Sr. Member
Posts: 300

Reply #3 on: Jul 28, 2018

Great! Please up vote

« previous next »

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.

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.

Did you know?

Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.