Students set up an experiment with a small block on a ramp. The block of mass M=3.0 kg is released from rest at the top of the curved ramp. The length of the ramp as measured along the curve is L=3.0 m, and the height is h=1.5 m, as shown. There is negligible friction between the small block and the ramp. The speed of the block at the bottom of the ramp is most nearly
A. 0
B. 5.5 m/s
C. 7.7 m/s
D. 9.5 m/s
E. 13 m/s

Explanation:

potential energy will be converted into kinetic energy

P E = mgh

K E = 1/2 m V²

mgh  =  1/2 m V²

V² = 2gh

V= √ 2gh

√ (2 x 9.8  x 1.5)

= 5.5 m /s

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.

compass can be used day and night, cloudy or sunny