Steve is driving his car along the road. Steve and the car have a mass of 1000 kg, and are travelling at 3 m/s. Steve sees a sharp turn coming up, so he starts to slow down. The brakes apply a force of 25 N on the car. The car moves 30 m while the brakes are applied. How fast are Steve and the car going after the 30 m?

coil wire, increase current, put iron inside the coil

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.