The great sandini is a 60 kg circus performer who is shotfrom a cannon (actually a spring gun). you don't find many men ofhis caliber, so you him design a new gun. this new gun has avery large spring with a very small mass and a force constant of1100 n/m that he will compress with a force of4400 n. the inside of the gun barrel is coated with teflon, sothe average friction force will be only 40 n during the 4.0 m he moves in the barrel.
at what speed will he emerge from the end of the barrel, 2.5 mabove his initial rest position?

V=15.3 m/s

Explanation:

To solve this problem, we have to use the energy conservation theorem:

the elastic potencial energy is given by:

The work is defined as:

this work is negative because is opposite to the movement.

The gravitational potencial energy at 2.5 m aboves is given by:

the gravitational potential energy at the ground and the kinetic energy at the begining are 0.

insects!

explanation:

graphing motion: mastery test

209be

what is the instantaneous acceleration of

the particle at point b?

0 meters/second?

10 meters/second?

12 meters/second?

velocity imetersisecond

15 meters/second?

20

time (seconds)

answer: 0 meters/second^2