Question
please help with number 9.
Cindy and Maggie are on roller skates. They face cach other and then push off from cach other. Cindy has a mass of 30 kg, and Maggie has a mas of 50 kg. If Maggie accelerates at 2.2 m/s, what is the magnitude of the net force on Cindy? You may neglect friction between the skates and the floor. A 44.0 N B 88.0N C 66.0N 0-3,65) 96.1 N (E 110.0 N The next TWO questions apply to the following: A person is riding a bicycle at 13 m's. 10. If the radius of cach wheel of the bicycle is 0.31 m, how fast are the bicycle wheels rotating in. revolations per minute? V- fw ,H A 50 rpm B 106 rpm D 270 rpm
Explanation / Answer
9] The force due to the push will be equal and opposite
so, net force on Cindy = F = ma = 50 x 2.2 = 110 N [answer - E]