The figure shows a famous roller coaster ride you can fricti

The figure shows a famous roller coaster ride you can friction if the roller leaves point q with a speed 0.10 m/s what its speed at the top pf the 25 m

Solution

According to the give problem,

Using conservation of energy principal,

W_i = W_f

K.E_i + P.E_i = K.E_f + P.E_f

1/2 mv_i² + mgh_i = 1/2 mv_f² + mgh_f

Mass cacel out and substitute the values to get the answer,

0.5 *0.1² +9.81*50 = 0.5*v² +9.81*25

0.5*v² = 245.255

v² = 490.51

v = 22.147 m/sec