Amass of m1= 3.50 kg is moving toward the right with a velocity of v1= 7.70 m/sec when it collides with a second mass ofm2= 5.50 kg. after the collision the second mass bounces off to the right of the original path of motion of the first ball at anangle ofêb= 27.65owith a speed of v4= 5.16 m/sec.
a. what will be the magnitude of the final velocity v3of the first mass after the collision?
b. what will be the direction of motion êa of the first ball after the collision?
c. how much energy was lost or gained in this collision?
d. was this collision elastic or inelastic? explain

What is work? how much work is done to move an object 0 meters?

Ascientist is tracking an object orbiting the sun that is found between mars and jupiter. in order to classify the object as an asteroid, it must be at least

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 790 n/m. it is initially at rest on an inclined plane that is at an angle of 28 degrees with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is k = 0.14. in the initial position, where the spring is compressed by a distance of a = 0.18 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.