An object with a mass of m = 3.00 kg has an initial velocity of vi = 6.00 m/s and a final velocity of vf = −8 m/s.
Determine the following:
(a) Determine its initial kinetic energy. Ki = J
(b) Determine its final kinetic energy. Kf = J
(c) Determine its initial momentum. pi = kg m/s
(d) Determine its final momentum. pf = kg m/s

Atruck driver is attempting to deliver some furniture. first, he travels 8 km east, and then he turns around and travels 3 km west. finally, he turns again and travels 13 km to his destination. what is the drivers total displacement?

Calculate the minimum energy required to remove one proton from the nucleus 126c. this is called the proton-removal energy. (hint: find the difference between the mass of a 126c nucleus and the mass of a proton plus the mass of the nucleus formed when a proton is removed from 126c.) express your answer with the appropriate units. emin e m i n = nothing nothing request answer part b how does the proton-removal energy for 126c compare to the binding energy per nucleon for 126c, calculated using eb=(zmh+nmn−azm)c2?

If a car has a speed of 20 m/s, how long will it take to go 155 m? a. 3100 s b. 135 s c. 2.1 s d. 7.8 s