« previous next »

Author Question: When a ball falls downward, it may have a net force A) equal to its weight. B) of zero. C) ... (Read 14 times)

melly21297

  • Hero Member
  • *****
  • Posts: 565
on: Jul 29, 2018
When a ball falls downward, it may have a net force
 
  A) equal to its weight.
  B) of zero.
  C) equal to its weight minus air drag.
  D) any of the above
  E) none of the above

Question 2

When a tennis racquet hits a ball,
 
  A) the racquet loses as much speed as the ball gains.
  B) the ball is set in motion with the same speed of the racquet upon contact.
  C) the ball hits the racquet.
  D) all of the above


Cnarkel

  • Sr. Member
  • ****
  • Posts: 339
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: D

Answer to Question 2

Answer: C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.

Did you know?

Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

Pronation and Supination Pronation–Lying prone (face downward); also turning the palm downward. Supi Pronation and Supination Pronation–Lying prone (face downward); also turning the palm downward. Supi
Fire ant ball Fire ant ball
Orangutan males are twice the size and weight of females. Orangutan males are twice the size and weight of females.
The Coriolis Force The Coriolis Force
A batter hits a home run in which the ball travels 110 m horizontally with no appreciable ... A batter hits a home run in which the ball travels 110 m horizontally with no appreciable ...
QTL Analysis of Tomato Weight in Backcross Progeny QTL Analysis of Tomato Weight in Backcross Progeny
Video: Lipid catabolism ( ketogenesis and oxidation of glycerol) and Lipid anabolism (lipogenesis)

For a complete list of videos, visit our video library