Jawaban:

10 m/s

Penjelasan:

Pembahasan Soal:

Diketahui :

begin mathsize 14px style italic v subscript 1 equals 20 space begin inline style bevelled m over s end style italic r subscript 1 equals 20 space cm italic r subscript 2 equals 10 space cm end style

Pembahasan :

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell italic omega subscript 1 end cell equals cell italic omega subscript 2 end cell row cell italic v subscript 1 over italic r subscript 1 end cell equals cell italic v subscript 2 over italic r subscript 2 end cell row cell 20 over 20 end cell equals cell italic v subscript 2 over 10 end cell row cell italic v subscript 2 end cell equals cell 10 space begin inline style bevelled m over s end style end cell end table end style

Jadi, kecepatan roda kedua sebesar 10 m/s