Acar is travelling at a constant speed of 26.5 m/s. its tires have a radius of 72 cm. if the car slows down at a constant rate to 11.7 m/s over 5.2 s, what is the magnitude of the angular acceleration of the tires during that time? (in rad/s^2)

Magnitude of angular acceleration = -3.95 rad/s²

Explanation:

Angular acceleration is the ratio of linear acceleration and radius.

That is

Radius = 72 cm = 0.72 m

Linear acceleration is rate of change of velocity.

Angular acceleration

Angular acceleration = -3.95 rad/s²  

Magnitude =  3.95 rad/s²     

pe = weightxheight = 2000x1000=2,000,000joules

which piece of furniture will have the most inertia and give the furniture movers the most difficulty in moving?  

answer

a 75kg dining table