A 100 kg football player is moving to the right at 5.5 m/s and collides with a 90 kg football player moving to the left at 2 m/s. After the collision, the
100 kg football player slows to 1.4 m/s to the right. What is the velocity of
the 90 kg football player after the collision?"

Abaseball has a mass of 0.145 kg and approaches a bat at 40.0 m/s. after it is hit, the ball leaves the bat at 50.0 m/s directly back. find the impulse of the bat on the ball. 7.25 kg*m/s 13.1 kg*m/s 5.80 kg*m/s 1.45 kg*m/s

Which accurately compares concave and convex lenses?

Suppose a diode consists of a cylindrical cathode with a radius of 6.200×10^−2 cm , mounted coaxially within a cylindrical anode with a radius of 0.5580 cm . the potential difference between the anode and cathode is 260 v . an electron leaves the surface of the cathode with zero initial speed (v initial=0). find its speed vfinal when it strikes the anode.