Answer:
-4.167m/s, 81.2385m
Explanation:
initial velocity=120km/hr = 33.33m/s
final velocity=75km/hr = 20.83 m/s
t=3s
Acceleration=v-u/t
a=(20.83-33.33)/3
a=-12.5/3
a=-4.167
Therefore, the acceleration is -4.167 m/s^2
s=ut+1/2at^2
33.33*3+1/2*-4.167*3^2
81.2385 m
Definitely D. The brakes on a bike rub against the wheel. Not sure about the others.
The point in the orbit of a planet, asteroid, or comet at which it is closest to the sun.
The best answer would be:
B. Epi pen
Here is more about it:
An epi pen injects epinephrine into the body to counteract the effects of an allergic reaction. Epinephrine helps narrow blood vessels and open up the airways. This can be used for food allergies, insect bites, and some other allergens. It is very effective and immediately works, but it is short-lived, so seeking medical attention after is still needed.
Answer:
A compass needle points north because the north pole of the magnet inside it is attracted to the south pole of Earth's built-in magnet. Now if the needle in your compass is pointing north, that means it's being attracted (pulled toward) something near Earth's north
Explanation: