A paraglider started to descent in his wingsuit. Knowing that air resistance will be significant to make the paraglider to be safe, which of the following will happen to its acceleration and velocity vectors? - Acceleration decreases while velocity increases - Acceleration increases while velocity increases - Acceleration constant while velocity decreases - Acceleration increases while velocity decreases
A paraglider started to descent in his wingsuit. Knowing that air resistance will be significant to make the paraglider to be safe, which of the following will happen to its acceleration and velocity vectors? - Acceleration decreases while velocity increases - Acceleration increases while velocity increases - Acceleration constant while velocity decreases - Acceleration increases while velocity decreases
College Physics
1st Edition
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter2: Kinematics
Section: Chapter Questions
Problem 44PE: A rescue helicopter is hovering over a person whose boat has sunk. One of the rescuers throws a life...
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a. A paraglider started to descent in his wingsuit. Knowing that air resistance will be significant to make the paraglider to be safe, which of the following will happen to its acceleration and velocity vectors?
- Acceleration decreases while velocity increases
- Acceleration increases while velocity increases
- Acceleration constant while velocity decreases
- Acceleration increases while velocity decreases
b. A car moving at 100 km/hr along a straight road suddenly hit the brakes. Which of the following is true about the acceleration and velocity vectors?
- The acceleration and velocity vectors are perpendicular to each other.
- The acceleration and velocity vectors are parallel to each other.
- The acceleration and velocity vectors are at 45 degrees to each other.
- The acceleration and velocity vectors are at 180 degrees to each other.
c. What is the acceleration of a car started from rest, and moved at 10 m/s for 10 s?
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