A 5.00 g bullet has a muzzle velocity of 250 m/s when fired by a rifle with a weight of 25.0 N. (a) Determine the recoll speed (in m/s) of the rifle. m/s (b) If a marksman with a weight of 725 N holds the rifle firmly against his shoulder, determine the recoil speed (in m/s) of the shooter and rifle. m/s

An 8 kilogram cannonball is loaded into a 1000 kilogram stationary cannon. When fired horizontally the velocity of the cannonball is 300 meters per second east. Determine the cannon’s recoil velocity.

An object of mass 2.92 kg, moving with an initial velocity of 5.05 î m/s, collides with and sticks to an object of mass 2.62 kg with an initial velocity of -4.06 î m/s. Find the final velocity of the composite object. î + m/s

Sphere m1 with a mass of 1.0 kg collides with m2, which also has a mass of 1.0 kg, in an elastic collision.  If v2f= 15 m/s and θ2= 40°, determine v1i.  (Hint:  An elastic collision requires that the after-collision angle between the two velocities must be 90°.)

A squid with an initial mass of 5.15 kg is initially at rest when it ejects 0.275 kg of fluid with a velocity of 7.5 m/s. Part (a) What is the recoil velocity, in meters per second, of the squid if the ejection is done in 0.12 s and there is a 5.15-N frictional force upposing the squid's movement? Use a coordinate system in which the ink is moving in the positive direction. Part (b) What is the difference in kinetic energy, in joules, between the case when there is no friction and the case where there is friction? Ejost

A girl launches a toy rocket from the ground. The engine experiences an average thrust of 5.26 N. The mass of the engine plus fuel before liftoff is 24.9 g, which includes fuel mass of 12.7 g. The engine fires for a total of 1.90 s. (Assume all the fuel is consumed.) (a) Calculate the average exhaust speed of the engine (in m/s). m/s (b) This engine is positioned in a rocket shell mass 42.5 g. What is the magnitude of the final velocity of the rocket (in m/s) if it were to be fired from rest in outer space with the same amount of fuel? Assume the fuel burns at a constant rate. m/s

A firework is launched and has a strictly vertical trajectory. It has velocity of 30 m/s right before it explodes. After it explodes, it instantaneously splits into three projectiles of equal mass. One of the projectiles continues to travel straight upwards with a velocity of 50 m/s. The right-most projectile now has an upward velocity of 45 m/s at 25◦ right of vertical. What is the final velocity of the left-most projectile?

In a game of pool, the cue ball strikes another ball initially at rest. After the collision, the cue ball moves at 3.50 m/s along a line making an angle of 22.0 degrees with its original direction of motion and the second ball has a speed of 2.00 m/s. a) Find the angle between the direction of motion of the second ball and the original direction of motion of the cue ball. b)  Find the original speed of the cue ball. c) Is the kinetic energy conserved? Show your proof.

Please explain

Starting from rest, two skaters push off against each other on ice where friction is negligible. One is a 64.0 kg woman and one is a 93.0 kg man.  The woman moves away with a velocity of +2.83 m/s.  Find the recoil velocity of the man.  Group of answer choices