Mechanics- sling shot being fired at wall

  • Thread starter Thread starter tonchik
  • Start date Start date
  • Tags Tags
    Mechanics Wall
Click For Summary
SUMMARY

The discussion focuses on calculating the rebound speed of a 0.3 lb marble fired from a slingshot at a concrete wall, with an initial velocity of 75 ft/s and a coefficient of restitution (e) of 0.6. To determine the speed after rebounding, one must apply the formula for the coefficient of restitution, which relates the speeds before and after impact. The final speed can be calculated using the equation: rebound speed = e * initial speed, resulting in a rebound speed of 45 ft/s.

PREREQUISITES
  • Understanding of the coefficient of restitution in physics
  • Familiarity with basic kinematics and constant acceleration equations
  • Knowledge of unit conversions, specifically between pounds and feet per second
  • Ability to perform calculations involving linear motion
NEXT STEPS
  • Study the principles of the coefficient of restitution in detail
  • Learn about kinematic equations for projectile motion
  • Explore real-world applications of slingshot mechanics
  • Investigate energy conservation during elastic and inelastic collisions
USEFUL FOR

Students in physics, engineers working on mechanical systems, and anyone interested in the dynamics of collisions and projectile motion.

tonchik
Messages
1
Reaction score
0
Using a slingshot, the boy fires the 0.3 lb marble at the concrete wall, striking it at point B.
If the coefficient of restitution between the marble and the wall is e= 0.6, determine the magnitude of the speed of the marble after it rebounds from the wall.

initial velocity is 75 ft/s

Help please! I don't even know where to start!
 

Attachments

  • Prob.15-78.jpg
    Prob.15-78.jpg
    7 KB · Views: 528
Physics news on Phys.org
Welcome to PF!

Hi tonchik! Welcome to PF! :wink:

Start by writing the standard constant acceleration equations for the x and y directions (separately), to find the velocity at B.

What do you get? :smile:​
 

Similar threads

High School Confusion regarding the coefficient of restitution
  • · Replies 2 ·
Replies
2
Views
2K
Finding the coefficient of restitution
  • · Replies 11 ·
Replies
11
Views
5K
Max speed and tension of bungee jump?
  • · Replies 3 ·
Replies
3
Views
7K
Help solve all this question please
  • · Replies 3 ·
Replies
3
Views
2K
Jackhammer on Vehicle Suspension, Unsprung Mass, Tire patch load
  • · Replies 13 ·
Replies
13
Views
4K
Solving Block B's Stop Time: A 1-lb Ball & 10-lb Block
  • · Replies 3 ·
Replies
3
Views
9K
Mechanical noise - A/C and radon fan standing wave hum
  • · Replies 4 ·
Replies
4
Views
5K
Will the train's cargo slam into the front of the boxcar?
  • · Replies 4 ·
Replies
4
Views
2K
Distance Traveled by a Fired Projectile
  • · Replies 4 ·
Replies
4
Views
3K
What is the average force exerted by the water on the wall when it rebounds?
  • · Replies 3 ·
Replies
3
Views
7K