Asquirrel, named jumping jacky rides on a remote-controlled toy car in a circle in the horizontal x-y plane of radius of 45.0 m. if the car is travelling with a constant tangential velocity of 36.0 m/s, what is the magnitude of the centripetal acceleration vector and its direction (does it point toward or away from the center of the circle or along the path that jackie takes)?

 28.8 m/sec², towards the center of the circle.

Explanation:

By definition, acceleration is defined as the quotient between a change in velocity (in value or direction) over time.

In this case, even the velocity value is constant, is changing direction all the time, so there is an acceleration present.

This acceleration is called the centripetal acceleration, and always aims to the center of the circle, because otherwise the toy car will move in a straight line at constant speed, like is dictated by Newton's First law.

It can be showed that it can be calculated as follows:

a = V² /  R  =  (36.0)² (m/s)² /  45.0 m = 28.8 m/s, pointing towards the center of the circle.

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force