Answer:
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Explanation:
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Explanation:
According to the question ,
- mass = 920kg
- time = 1s
- Initial velocity = 16m/s
- Final velocity = 9.5m/s
And we need to find out ,
As we know that Force is the rate of change of momentum ,
F = ∆p/t
F = mv - mu/t
F = m(v - u)/t
F = 920(9.5-16)/1 N
F = 920 * -6.5 N
Force = -5980N
The direction of the force will be opposite to the direction of velocity of the car .
- Distance travelled while breaking ?
Using the 3rd equation of motion , we have ,
2as = v² - u²
2 (v-u)/t *s =(v+u)(v-u)
2(t)(s) = v + u
2 * 1 * s = 16 + 9.5
s = 25.5/2 m
s = 12.75 m
Answer:
simple machines such as ramps lessen the moment required to do work. if a triangle has a base of 5 and the height is 7, a ramp would make the hypotenuse of this triangle lessoning the total distance. using a²+b²=c² 25+49=c² 74≈8.6 and it is obvious that 8.6 is less than 12 in every unit. other simple machines such as pulleys make it lighter making it simply easier for an object to be lifted.
Explanation:
Answer:
I think it's B: b.
Use the number that lines up with the bottom part of the blue line on the left of the thermometer
Explanation:
The liquid in the thermometer makes a "U" crescent and you have to use the bottom of the "U" touches the the lines on the side.
Answer:
At least 10 major federal laws deal with protecting the environment and the health and safety of U.S. residents. This is in addition to the multitude of other federal acts, rules, and administrative environmental regulations
Explanation: