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Q. As part of a safety investigation, two 1900 cars traveling at 25 are crashed into different barriers. Find the average forces exerted on (a) the car that hits a line of water barrels and takes 1.8 to stop, and (b) the car that hits a concrete barrier and takes 0.5 to stop.
Q. determinate the stopping distance for a skier moving down a slope with friction with an initial speed of 20.o m/s. assume uk=0.180 and = 5.00 degrees.
Find the differential equation and use the initial conditions to determine the constant of integration.
Establish the average net force
Why does the base of a shuttle cock always lead in motion when hit with a racket. what is grocery carts final speed.
What is the amplitude of subsequent oscillations
A 60 kg person drops from rest a distance of 1.20m to a platform of negligible mass supported by a stiff spring. The platform drops 6cm before the person comes to rest.
How much charge passes during the starter motor
For a damped oscillator with a mass of 320g, a spring constant 82N/m and a damping coefficient of 71g/s, what is the ratio of the amplitude of damped oscillations to the initial amplitude at the end of 28 cycles.
A car of mass = 1400 travelling at 60.0 enters a banked turn covered with ice. The road is banked at an angle, and there is no friction between the road and the car's tires. Use = 9.80 throughout this problem.
The mass of a space shuttle is approximately 2.0x10^6 kg. Throughout lift-off, the net force on the shuttle is 1.0x10^7 newtons directed upward. What is the speed of the shuttle 10 seconds after liftoff.
A person wears a hearing aid that uniformly increases the intensity level of all audible frequencies of sound by 29.7 dB. The hearing aid picks up sound having a frequency of 250 Hz at an intensity of 3.10 10-11 W/m2. What is intensity delivered to t..
What is the weight of the displaced amount of water when the boulder is placed inside the tank (measured in N)? The tank had an original volume of water of 5000 L. while the boulder got placed inside the tank, the volume of water rose to 5010.165 ..
An astronaut travels to an alternate universe that contains infinite charged plane and no other charged objects. The astronaut observes that the electric field in this universe has a magnitude of 1.20 N/C everywhere and points directly away from the ..
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