A person driving a car at 180km/h sees a fallen tree on the road. He brakes immediately upon seeing the obstacle and manged to stop the car in 5 seconds. What was the acceleration of the car assuming it to be uniform? ​

a = 10 m/s²

opposing original velocity.

Explanation:

180 km/hr (1000 m/km) /(3600 s/hr) = 50 m/s

a = Δv/t = (0 - 50) / 5 = -10 m/s²

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.