Question #1fce2

1 Answer
Jan 9, 2018

E_k= 3526J

Explanation:

The formula for kinetic energy is:

K = 1/2mv^2

a.
rArr K_1= 1/2*52.4 Kg*(10..7 m/s)^2 =2999.63 ((kg*m)/s^2)*m

K_1 ~~3000 N.m = 3000 J

b. K_2 = 3526 J

c. (K1)/(K2) = 0.85 or 85%

which is the same as (10.7/11.6)^2 -- check it out#