8. A 3.0 x 10' g nerf projectile is fired from a 1.5 kg nerf gun. If the velocity of the projectile is
1.0 x 10 m/s. what is the recoil velocity of the nerf gun? ( 2.0 x 10-1 m/s in the
opposite direction of the projectile). whic is the formule to resol e this problem?

Explanation:

Given:

Now in this case the collision can be assumed to be perfectly elastic.

For an elastic collision:

where:

recoil velocity of the gun

f is prop to m1xm2 double m1 double force

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.