« previous next »

Author Question: A 600-kg car makes a 90 turn. Its speed before the turn is 21.0 m/s and after the turn it is 24.0 ... (Read 140 times)

mrsjacobs44

  • Hero Member
  • *****
  • Posts: 500
on: Jul 29, 2018
A 600-kg car makes a 90 turn. Its speed before the turn is 21.0 m/s and after the turn it is 24.0 m/s. What is the magnitude of the change in the car's momentum during the turn?
 
  A) 19.1  103 kgm/s
  B) 10.2  103 kgm/s
  C) 9.55  103 kgm/s
  D) 12.0  103 kgm/s
  E) 22.2  103 kgm/s

Question 2

The driver of a motorboat that can move at 10 m/s in still water wishes to travel directly across a river in which the current flows at 5.0 m/s.
 
  (a) At what angle, measured from the upstream direction, should the driver head the boat? (b) How many minutes will it take to cross the river if it is 1.6 km wide at that point?


cici

  • Sr. Member
  • ****
  • Posts: 325
Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

(a) 60 (b) 3.1 min


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

Did you know?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

A rapidly vibrating needle at idle that becomes steady as engine speed is increased indicates worn ... A rapidly vibrating needle at idle that becomes steady as engine speed is increased indicates worn ...
A secondary waveform of a Ford 4.6 liter V-8, showing three sparks occurring at idle speed. A secondary waveform of a Ford 4.6 liter V-8, showing three sparks occurring at idle speed.
Phosphorus in Phospholipids Phosphorus makes up part of the phospholipids found in cell membranes Phosphorus in Phospholipids Phosphorus makes up part of the phospholipids found in cell membranes
Section through one turn of the cochlea Section through one turn of the cochlea
A pool player is attempting a fancy shot. He hits the cue ball giving it a speed of 5.57 m/s ... A pool player is attempting a fancy shot. He hits the cue ball giving it a speed of 5.57 m/s ...
A simple pendulum of length 2.5 m m makes 5.0 complete swings in 16 s s . What is the ... A simple pendulum of length 2.5 m m makes 5.0 complete swings in 16 s s . What is the ...
Video: Anaphylaxis Animation

For a complete list of videos, visit our video library