1- A flea jumps by exerting a force of 1.20 x 10^-5 N straight down on the ground. A breeze blowing on the flea parallel to the ground exerts a force of 0.50010^-6N on the flea. Find the magnitude of the acceleration in m/s2 of the flea if its mass is 6.00 x 10^-7 kg. Do not neglect the gravitational force.

2-

Three blocks A, B, and C stand next to each other as shown in the figure. A force F with magnitude 88,1 N is applied to push block C directly and sends the blocks accelerating to the right. Let's assume there is no friction between the blocks and the ground. The mass of A, B, and C are 4,3, 55,8, and 88,9 kg, respectively. What is the force applied on block B by block C (in unit of N)? F C B A