Explanation:
Given data
velocity v= 25m/s
The time it takes to put on brake t= 0.3s
the distance covered when the brake was put on is
v=s/t
s= v*t
s= 25*0.3s
s= 7.5m
hence the distance covered is 7.5m
Also the rate of decrease in aceleration is 5m/s^2
we can also calculate the distance covered at this rate
v^2=u^2+2as
25^2= 0+2*5*s
625=10s
divide both sides by 10
s=625/10
s= 62.5m
The total distance covered between putting on the brakes and decelareation is 7.5+62.5= 70m
Given that the tree is 75m ahead, the car would not hit the tree
Answer:
no motion means no velocity, so the y values willl always be 0 as ur time (x) value increses
Explanation:
The best and most correct answer among the choices provided by the question is <span>B.sound waves</span><span>.
</span>
<span>Particles move together or apart parallel to the direction of the sound wave.
</span>
Hope my answer would be a great help for you.
If you have more questions feel free to ask here at Brainly.
<h3>
Answer:</h3>
<h3>
Explanation:</h3>
_______________
S=3 m²
F=900 N
_______________
p - ?
_______________
p=F/S=900 N / 3 m² = 300 Pa
Same answer as the first one above
