Question

What is the kinetic energy of a 1.0-kg billiard ball that moves at 5.0 m/s?

A.
5.0 J

B.
6.5 J

C.
10.0 J

D.
12.5 J

Answer 1

Ch.6 Solutions - UCSD Department of Physics
physics.ucsd.edu/.../Ch6_solutions.pd...
University of California, San Diego
Assuming a mass of 55 kg and an impact time of At E 1.0 s, the magnitude of this average force is ... (b) The area under the curve between t = O and t= 5.0 s is: .... velocity of the players just after the tackle and (b) the kinetic energy lost as a result of ... A billiard ball/moving at 5.00 m/ strikes a stationary ball of the same mass.

Answer 2

so its b?

Answer 3

One of the most important formulae in physics is the formula for kinetic energy (KE):
KE = ½ x mass x velocity²
KE = ½mv²

m is in kg, v is in m/s and KE in in joules(J).

You are probably meant to learn this off-by-heart.

KE = ½ x 1.0 x 5.0² = 12.5J

Answer 4

this is the answer KE = ½ x 1.0 x 5.0² = 12.5J

Answer 5

12.5J

Answer 6

o ok thank you