Aracecar is traveling in uniform circular motion around a racetrack. what happens to the centripetal acceleration of the car if the speed is doubled and the radius of the circle remains constant?

Electric charge is uniformly distributed inside a nonconducting sphere of radius 0.30 m. the electric field at a point p, which is 0.50 m from the center of the sphere, is 15,000 n/c and is directed radially outward. what is the maximum magnitude of the electric field due to this sphere

An object is moving east, and it’s velocity changes from 65m/s to 25m/s in 10 seconds. which describes the acceleration?

Describe the path of a ray that approaches a mirror parallel to the principal axis.