Let the acceleration of the system is a and the time to
reach 60 mph is t, so
ax = (μs - μr) * g
ax = (1.00-0.80) (9.8 m/s2) = 1.96 m/s2
Then I used acceleration in this equation:
vf = vi + ax * t
60 mph = 0 mph + (1.96 m/s2) t
t = (60 mph/1.96 m/s2)(0.447 m/s / 1 mph)
t = 13.68 s
Answer: the answer is B the lower the resistance,the higher the conductivity
Explanation:
Resistance is inversely proportional to conductivity,the lower the resistance the higher the conductivity,the metal silver has a very low resistance,thus it conductivity is high
The instantaneous velocity of the object is its speed and direction at that instant.
Answer:
0.6944 m/sec^2
Explanation:
The computation of the average acceleration is given below:
a = v - u ÷ t
where
a denotes average acceleration
v denotes final velocity
u denotes initial velocity
t denotes time
So, the average acceleration is
= (25 - 0) ÷ 10
= 0.6944 m/sec^2
