This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The speed of a 4.0-kg object is given by v = (2t) m/s, where t is in s. At what rate is the ... (Read 99 times)

jace

  • Hero Member
  • *****
  • Posts: 541
on: Jul 28, 2018
The speed of a 4.0-kg object is given by v = (2t) m/s, where t is in s. At what rate is the resultant force on this object doing work at t = 1 s?
 a. 48 W
  b. 40 W
  c. 32 W
  d. 56 W
  e. 16 W

Question 2

A 2.0-kg block slides down a plane (inclined at 40 with the horizontal) at a constant speed of 5.0 m/s. At what rate is the gravitational force on the block doing work?
 a. +98 W
  b. +63 W
  c. zero
  d. +75 W
  e. -75 W


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

manuelcastillo

  • Sr. Member
  • ****
  • Posts: 304
Reply #1 on: Jul 28, 2018
Answer to Question 1

E

Answer to Question 2

B


jace

  • Member
  • Posts: 541
Reply 2 on: Jul 28, 2018
Gracias!

Bigfoot1984

  • Member
  • Posts: 321
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

If you could remove all of your skin, it would weigh up to 5 pounds.

Did you know?

Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.

All fuel injectors should make the same sound with the engine running at idle speed. A lack of sound ... All fuel injectors should make the same sound with the engine running at idle speed. A lack of sound ...
Effect of Increasing the Investment Rate on the Steady State Effect of Increasing the Investment Rate on the Steady State
For each function f(x) = 6x^2 - 4, estimate the instantaneous rate of change for the given ... For each function f(x) = 6x^2 - 4, estimate the instantaneous rate of change for the given ...
A simple harmonic oscillator has an amplitude of 3.50 cm and a maximum speed of A simple harmonic oscillator has an amplitude of 3.50 cm and a maximum speed of
Sonja is paid $42.50 per hour as a veterinarian. She is paid 1 times the regular rate for all ... Sonja is paid $42.50 per hour as a veterinarian. She is paid 1 times the regular rate for all ...
Rate order question Rate order question
Video: Chronology of leptin research (A history of leptin research)

For a complete list of videos, visit our video library