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1. A CAR TRAVELLING AT 18.0 m/s ACCELERATES AT THE RATE OF 0.25 m/s². WHAT IS THE SPEED AT THE END OF 20 s?

1. A CAR TRAVELLING AT 18.0 m/s ACCELERATES AT THE RATE OF 0.25 m/s². WHAT IS THE SPEED AT THE END OF 20 s?

An Introduction to Physical Science
An Introduction to Physical Science
14th Edition
ISBN:9781305079137
Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Chapter4: Work And Energy
Section4.2: Kinetic Energy And Potential Energy
Problem 4.1CE
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PROBLEMS (SHOW ALL WORK ON A SEPARATE SHEET) 1. A CAR TRAVELLING AT 18.0 m/s ACCELERATES AT THE RATE OF 0.25 m/s². WHAT IS THE SPEED AT THE END OF 20 s? 2. A BALL ROLLS DOWN A HILL WITH A CONSTANT ACCELERATION OF 3.0 m/s². (A) IF IT STARTS FROM REST, WHAT IS ITS SPEED AT THE END MOVE? 4.0 s? FAR DID IT 3. (A) HOW LONG WILL IT TAKE FOR A FREELY FALLING BODY TO ACQUIRE A SPEED OF 58.8 m/s? (B) HOW FAR WILL IT HAVE FALLEN DURING THAT TIME? 4. WHICH HAS MORE ACCELERATION WHEN MOVING IN A STRAIGHT LINE-A CAR INCREASING ITS SPEED FROM 75 km/h TO 90 km/h, OR A BICYCLE THAT GOES FROM ZERO TO 15 km/h in the same time? DEFEND YOUR ANSWER. S. DETERMINE THE STOPPING DISTANCES FOR A CAR WITH AN INITIAL SPEED OF 95km/h AND A HUMAN REACTION TIME OF 1.0 s, FOR AN ACCELERATION OF.. (A) a=-4.0 m/s², (B) a=-8.0 m/s² (Hint: First, convert 95 km/h to m/s) 6. A TRUCK AND A CAR ARE MOVING IN THE SAME DIRECTION AT CONSTANT SPEEDS. THE TRUCK IS 3.5 miles BEHIND THE CAR. THE TRUCK HAS A SPEED OF 65 mi/h, WHILE THAT OF THE CAR IS $5 mi/h. (A) FIND THE DISTANCE TRAVELED BY THE CAR (B) HOW LONG-WILL IT TAKE FOR THE TRUCK TO CATCH UP WITH THE CAR? (Express answer in minutes) . (C) FIND THE DISTANCE TRAVELED BY THE TRUCK
Transcribed Image Text:PROBLEMS (SHOW ALL WORK ON A SEPARATE SHEET) 1. A CAR TRAVELLING AT 18.0 m/s ACCELERATES AT THE RATE OF 0.25 m/s². WHAT IS THE SPEED AT THE END OF 20 s? 2. A BALL ROLLS DOWN A HILL WITH A CONSTANT ACCELERATION OF 3.0 m/s². (A) IF IT STARTS FROM REST, WHAT IS ITS SPEED AT THE END MOVE? 4.0 s? FAR DID IT 3. (A) HOW LONG WILL IT TAKE FOR A FREELY FALLING BODY TO ACQUIRE A SPEED OF 58.8 m/s? (B) HOW FAR WILL IT HAVE FALLEN DURING THAT TIME? 4. WHICH HAS MORE ACCELERATION WHEN MOVING IN A STRAIGHT LINE-A CAR INCREASING ITS SPEED FROM 75 km/h TO 90 km/h, OR A BICYCLE THAT GOES FROM ZERO TO 15 km/h in the same time? DEFEND YOUR ANSWER. S. DETERMINE THE STOPPING DISTANCES FOR A CAR WITH AN INITIAL SPEED OF 95km/h AND A HUMAN REACTION TIME OF 1.0 s, FOR AN ACCELERATION OF.. (A) a=-4.0 m/s², (B) a=-8.0 m/s² (Hint: First, convert 95 km/h to m/s) 6. A TRUCK AND A CAR ARE MOVING IN THE SAME DIRECTION AT CONSTANT SPEEDS. THE TRUCK IS 3.5 miles BEHIND THE CAR. THE TRUCK HAS A SPEED OF 65 mi/h, WHILE THAT OF THE CAR IS $5 mi/h. (A) FIND THE DISTANCE TRAVELED BY THE CAR (B) HOW LONG-WILL IT TAKE FOR THE TRUCK TO CATCH UP WITH THE CAR? (Express answer in minutes) . (C) FIND THE DISTANCE TRAVELED BY THE TRUCK
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