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A car with passengers has a mass M=2000 kg and travels with a speed of 65 miles/hour.
Suddenly, the driver the brakes to avoid a collision with another car traveling at 20 miles/hour at a distance D=30 meters away (98.4ft). Analyze the problem from the moment when the breaks are fully engaged and tires are not rotating.
Question: will there be collision between the two cars?
Talk about the friction and how would you determine if there will be collision.
you need to solve the problem as a function of the friction coefficient, then discuss your result based on the following coefficient’s values : {0.1, 0.8}. What should be the minimum safe distance between the two cars [assuming two values for the coefficient {0.1, 0.8}?
The solution needs to include the following:
1. All diagrams (if any).
2. Show detailed solution steps including all the calculations.
Assuming compression is according to the law PV = constant. Calculate the initial
volume of gas at a pressure of 2 bar which will occupy a volume of 6 m3 when it is
compressed to a pressure of 42 bar.
A sample of helium behaves as an ideal gas as it is heated at constant pressure from 253 K to 368 K. If 20 J of work is done by the gas during this process, what is the mass of the helium sample? The universal gas constant is 8.31451 J/mol · K. Answer in units of g.
car start from rest and accelerate uniformly for 10s until it attains a velocity of 25m/s it then travel with the uniform velocity for 20s before decelerating sketch a velocity time graph of the motion of the car
What is the velocity of a 0.5 kg ball that has a momentum of 3.0 kg m/s?
What is the velocity of a 0.5 kg ball that has a momentum of 3.0 kg m/s?
at what speed does a gun recoil if it weight 44.5 n and fires a 1.0g bullet at a 2500m/s
A pool ball leaves a 0.60-meter high table with an initial velocity of 2.4 m/s. Predict the time required for the pool ball to fall to the ground and the horizontal distance between the table's edge and the ball's landing location.
A sphere of mass 20 kg is attracted by another sphere of mass
30 kg with a force of 4x 10-5 V. What is the distance between the
spheres? Round your answer to the nearest hundredth.
What is the average density of a woman who floats in freshwater with 3% of her volume above the surface?
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