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

Author Question: When Jim and Rob ride bicycles, Jim can only accelerate at three quarters the acceleration of Rob. ... (Read 31 times)

tsand2

  • Hero Member
  • *****
  • Posts: 520
on: Jul 28, 2018
When Jim and Rob ride bicycles, Jim can only accelerate at three quarters the acceleration of Rob. Both start from rest at the bottom of a long straight road with constant upward slope. If Rob takes 5.0 minutes to reach the top, how much earlier should Jim start to reach the top at the same time as Rob?
 a. 25 s
  b. 40 s
  c. 46 s
  d. 55 s
  e. 75 s

Question 2

A rocket, initially at rest, is fired vertically with an upward acceleration of 10 m/s2 . At an altitude of 0.50 km, the engine of the rocket cuts off. What is the maximum altitude it achieves?
 a. 1.9 km
  b. 1.3 km
  c. 1.6 km
  d. 1.0 km
  e. 2.1 km


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mirabriestensky

  • Sr. Member
  • ****
  • Posts: 325
Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

D


tsand2

  • Member
  • Posts: 520
Reply 2 on: Jul 28, 2018
Excellent

alexanderhamilton

  • Member
  • Posts: 334
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

Did you know?

Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

On average, the stomach produces 2 L of hydrochloric acid per day.

Hi-Tech Scans Catch Prehistoric Mite Hitching Ride On Spider Hi-Tech Scans Catch Prehistoric Mite Hitching Ride On Spider
Acceleration–deceleration injuries Acceleration–deceleration injuries
The Kingsley plantation, on Fort George Island in Jacksonville, Florida. Zephaniah Kingsley, the own The Kingsley plantation, on Fort George Island in Jacksonville, Florida. Zephaniah Kingsley, the own
JFK and Jacqueline Kennedy ride in a motorcade with Texas Governor John Connolly and his wife in ... JFK and Jacqueline Kennedy ride in a motorcade with Texas Governor John Connolly and his wife in ...
When the air–fuel mixture rapidly changes such as during a rapid acceleration, look for a rapid ... When the air–fuel mixture rapidly changes such as during a rapid acceleration, look for a rapid ...
An electron is accelerated from rest through a potential difference. After acceleration the ... An electron is accelerated from rest through a potential difference. After acceleration the ...
Video: The Pressure Flow Model in a Plant

For a complete list of videos, visit our video library