A motobike's tire rotates with a constant angular speed of 62.8 rad/s. The radius of a tire is 30cm. Assuming that no slipping occurs, the linear speed at a point 20 cm from the tire's center is:
Chọn một:
a.
10 m/s
b.
20 m/s
C.
18.8 m/s
d.
12.6 m/s

12.6 m/s

Explanation:

We know that the linear speed v = rω where r = radius and ω = angular acceleration. Given that ω = 62.8 rad/s and r = 20 cm from center = 0.2 cm

So, v = rω

= 0.2 m × 62.8 rad/s

= 12.56 m/s

≅12.6 m/s

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

answer

procedural programming, object-oriented programming

explanation

procedural programming is a type of computer programming language that specifies a series of well structured steps and procedures   within its development period of time. it contains a systematic order of statements, functions and commands to complete a computational task or program. it is centered on creating procedures. while object oriented programming is a programming language that is centered on creating objects rather that actions and data rather than logic.. it has four principles which are inheritance, polymorphism, abstraction and encapsulation