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To stop a car, first you require a certain reaction timeto begin braking. Then the car slows down at a constant rate.Suppose that the total distance moved by your car during these twophases is 56.7 m when its initial speed is 76.5 km/h, and 24.4 mwhen the initial speed is 44.3 km/h.
A) What is your reaction time?
B) What is the magnitude of the deceleration?
At that point its engines fail, and the rocket goes into free fall, with an acceleration of ?9.80 m/s2. What is its velocity just before it hits the ground
The average lifetime of a pi meson in its own frame of reference is 2.6×10-8 s. (This is the proper lifetime.), What is the average distance it travels before decaying
a 64-turn coil with an area of 8.6x10-3 m2 is dropped from a position where b 0.0 t to a new position where b 0.22 t.
Why does the base of a shuttle cock always lead in motion when hit with a racket. what is grocery carts final speed.
A 100 MeV particle decays into two particles. one of these two particles has a mass of 10 MeV and a speed of 3/5. what was the inital particle's speed
A student weighing 800 N crouches on a scale and suddenly springs vertically upward.His roommate notices that the scale reads 900 N, With what acceleration does he leaves the scale
The length of a simple pendulum is 0.72 m and the mass of the particle (the "bob") at the end of the cable is 0.27 kg. What is the angular frequency of the motion
A therapist examines the range of motion of an thlete's knee joint during her rehabilitation from a knee injury, What was the angular displacement of the leg from full extension to full flexion
In the field of psychology, what is meant by the term “catharsis”? According to Joseph Bruer, Illustrate what effect did “catharsis” have on the mental functioning of someone with a “troubled mind”? Why?
Alpha particles (charge = +2e, mass = 6.68* 10^-27 kg) are accelerated in a cyclotron to a final orbit radius of 0.50 m. Determine the kinetic energy of an alpha particle in the final orbit
A uniform plank of length 4.9m and weight 228N rests horizontally on two supports, with 1.10m of the plank hanging over the right support. To what distance x can a person who weighs 449N walk on overhanging part of the plank before it just begins ..
consider a model rocket that is lunched in a vertical direction. Nelected air resistance and changes in its mass , m. determine the mamimum alttiude
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