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Q1. A car slows down with an acceleration that has a magnitude of 3.6 m/s2. While doing so, it travels 113 m in the +x direction and ends up with a velocity of +4.4 m/s. What was the car's initial velocity?
Q2. When you weigh yourself on good old terra firma (solid ground), your weight is 135 lb. In an elevator your apparent weight is 113 lb. What are the direction and magnitude of the elevator's acceleration?
Q3. You're driving down the highway late one night at 18 when a deer steps onto the road 36 in front of you. The reaction time before stepping on the brakes is 0.50, and the maximum deceleration of your car is 12.
A flight attendant pulls her 63N flight bag a distance of 308m along a level airport floor at a constant velocity. The force she exerts is 45N at an angle of 57° above horizontal. Find the work she does on flight bag.
A lead ball is dropped into a lake from the diving board 30 m above the water. After entering the water, it sinks to the bottom with the constant velocity equal to velocity with which it hit the water. The ball reaches the bottom 10 s after it is ..
A solid wood door 1.00 m wide and 2.00 m hight is hinged alone one side and has a total mass of 40.0 kg, whats the final angular speed of the door
A copper pot with a mass of 0.485kg contains 0.175kg of water, and both are at a temperature of 20.0?C. Find the final temperature of the system
An object with a mass of 41.0 g is moving uniformly with a velocity of 37.0 m/s along the positive x-axis. What is the velocity of the first particle, in the zero momentum frame, after an elastic collision
An object 6 cm high is placed 30 cm from a concave mirror of focal length 10 cm, Calculate size of image
Calculate the speed of sound for a wave whose wavelength is 2.5 m and whose frequency is 270 Hz
What is the critical angle for light to stay inside a thin glass rod (n = 1.72) surrounded by air
A solenoid inductor has an emf of 0.90V when the current through it changes at the rate 10.0 A/s. How many turns does the inductor have
A person wears a hearing aid that uniformly increases the intensity level of all audible frequencies of sound by 32.5 dB. What is the intensity delivered to the eardrum
The image of a very distant car is located 25 cm behind a convex mirror. What is the radius of curvature of the mirror
An electron and a proton, starting from rest, are accelerated through an electric potential difference of the same magnitude. In the process, Find the ratio ve/vp
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