Answer: The car was moving with the speed of 14.13 m/s.
Explanation:
Length of the skid marks,d = 34 m
Mass of the car = 825 kg
Coefficient of friction = 
Velocity of the car after applying the brakes =v
Acceleration due gravity = 
v = 14.13 m/s
The car was moving with the speed of 14.13 m/s.
Answer:uranus
Explanation:it sounds weird
Answer:
t = 5.4 s
Explanation:
from the question we are given :
height (s) = 20 m
mass of paint (Mp) = 4 kg
mass of nails (Mn) = 3 kg
acceleration due to gravity (g) = 9.8 m/s^{2}
- The net force accelerating the can of paint should be equal to the difference in weight of the can of paint and the can of nails.
weight of nails = mass of nails x g = 3 x 9.8 = 29.4 N
weight of paint = mass nails x g = 4 x 9.8 = 39.2 N
net force = 39.2 - 29.4 = 9.8 N
- net force = total mass x acceleration
9.8 = (3 +4) x a
a = 1.4 m/s^{2}
- from S = Ut + 0.5at^{2} we can get the time the carpenter has to catch the nails
where U is the initial velocity and is 0 since the can was initially at
rest
20 = (0 x t) + (0.5 x 1.4 x t^{2})
20 = 0.7 x t^{2}
t^{2} = 28.6
t = 5.4 s
Answer:
it will option B,hope it helps
Answer:
<h2>Yes.</h2>
Explanation:
If we want to "disable" astham attacks, that would imply too many restictions for those people who can suffer from these attacks. For example, in order to avoid these attacks, they couldn't do sport activities, because that would alter their respiratory system, which occasionate astham attacks.
Therefore, this statement is true.
