The mountain bike has a mass of 40 kg with center of mass at point G1, while the rider has...

The mountain bike has a mass of 40 kg with center of mass at point G1, while the rider has a mass of 60 kg with center of mass at point G2. When the brake is applied to the front wheel, it causes the bike to decelerate at a constant rate of 3 m/s2. Determine the normal reaction the road exerts on the front and rear wheels. Assume that the rear wheel is free to roll. Neglect the mass of all the wheels.