Answer:
It means zero acceleration.
Explanation:
When a body moves with constant velocity then it is said to be there is no rate of change of velocity takes place because it is constant. So the acceleration becomes zero or uniform acceleration.
Answer:
0.333 m/s
Explanation:
avg speed= (total distance)/(total time)
10m/30s
0.333 m/s
Answer:
50 Ohms
Explanation:
Given that
the original resistance of the wire is 2 ohms, then
it is known that the equivalent resistance in a parallel circuit is
1/R(eq) = 1/R1 + 1/R2 + 1/R3 + 1/R4 + 1/R5.......+ 1/Rn
Giving that there are 5 pieces, then we stop at number 5.
Since R(eq) is 2, we substitute for that, and then we have
1/2 = 1/R + 1/R + 1/R + 1/R + 1/R
1/2 = 5/R
R = 5 * 2
R = 10 ohms
Since each R is 10 ohms, and the wire was cut into 5 pieces, we can then say that the original resistance of the wire is
R + R + R + R + R
10 + 10 + 10 + 10 + 10
total original resistance is 50 Ohms
Answer:
a) 20.54 J
b) 30.97 J
c) 10.43 J
d) -20.54 J
Explanation:
m = Mass
g = Acceleration due to gravity = 9.81 m/s²
h = Height
Work done by the ball's weight is 20.54 J
Gravitational potential energy of the basketball, relative to the ground, when it is released is 30.97 J
Gravitational potential energy of the basketball, relative to the ground, when it is released is 10.43 J
Change in gravitational potential energy
Change in gravitational potential energy is given by -20.54 J