Jessie was driving her 2000-kg Camry when she dropped her phone. She leaned down to pick it and just then a small child rode his bicycle into the street 45 meters in front of her. She is traveling at 15 m/s (about 30 mph). She sees the boy and slams on the brakes and the car comes to a stop with the bumper of the car just touching the tire of the bike. Whew!! Calculate the braking force of the car.