Positive acceleration occurs when an object speeds up.
Explanation:
Acceleration is the rate of change in velocity per unit time:
where 
is the change in velocity while 
is the time interval. From the formula, we can understand that when is positive, so when the object is speeding up, the acceleration is positive; on the contrary, when is negative (so, when the object is slowing down), the acceleration is negative.
Answer
given,
Assume radius of the disk be = 0.8 m
angular velocity of disk
ω = ( 5 t² + 2 ) r a d / s
magnitude of velocity and acceleration = ?
At the instant of time, t = 0.5 s
ω = ( 5 x (0.5)² + 2 ) r a d / s
ω = 3.25 r a d / s
α = 5 rad/s²
velocity
v = ω r
v = 3.25 x 0.8
v = 2.6 m/s
tangential acceleration
normal acceleration
magnitude of the acceleration
a = 9.35 m/s²
The protons an atom has is 36
The neutrons an atoms has is 6
The electrons an atom is equal to the protons
Answer:
Explanation:
1) Is option C, Radiocarbon
2) i think is option A, true.
3) im pretty sure is option B, false.
i hope i helped :)
Answer:
a is potential and b is kinetic
