Answer:
<u><em>20 m/s.</em></u>
Explanation:
Mass of body m: 10kg
The kinetic energy of the body is given as; 
Value of Kinetic energy K.E = 2000 Joules
V is the body's velocity, and M is the body's mass.
Calculating the value of velocity;
= 
Velocity maintained by the body having a kinetic energy of 2000J is
20 m/s.
Explanation:
angular velocity is given by


w = 0.626
now tangential velocity is
V = rw
= 25 x 0.626
= 15.65 m/s
Answer:
B. decreases while his angular speed remains unchanged.
Explanation:
His angular speed will always be the same as the wheel's angular speed, which remains constant as it's in uniform motion. As for linear speed, which is defined as the product of angular speed and distance r to the center of rotation, and his distance to center is decreasing, his linear speed must be decreasing as well.
Answer:
A
Explanation:
all the work is in the attached file :D
Answer:
made of metals and nonmetals is true of ionic compounds