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Q1. The driver of a 1800 {rm kg} car travelling on a horizontal road at 100 {rm km}/{rm h} suddenly applies the brakes. Because of a slippery pavement, the friction of the road on the tires of the car, which is what slows down the car, is 20.0% of the weight of the car.
What is the acceleration of car?
Q2. A stone thrown horizontally from the height of 8.5 m hits the ground at a distance of 13.10 m. estimate the initial speed of the ball.
Compute the speed of the ball as it hits the ground.
Uniform rate of acceleration
An electron is shot upward directly perpendicular to the lower plate of a parallel plate capacitor. Its initial velocity is 3.0 x 104 m/s. What must be the potential of the upper plate if the electron stops just before reaching it? The lower plate..
An astronaut on a small planet wishes to measure the local value of g by timing pulses travelling down a wire which has a large object suspended from it. Imagine the wire of mass 3.80 g is 1.60 m long and has a 3.00-kg object suspended from it. A pul..
A rifle with a barrel length of 58 fires an 11 bullet with a horizontal speed of 370. The bullet strikes a block of wood and penetrates to a depth of 15.
A microscope with an eyepiece lens of focal length 1.90 cm and an objective lens of focal length 1.15 cm is used to examine a section of the brain of a sacrificed rat. The distance between the lenses of the instrument is 24.0 cm and final image is vi..
A 0.449 kg ice puck, moving east with a speed of 2.91 m/s, has the head-on collision with a 0.846 kg puck initially at rest. Assume a perfectly elastic collision, what will be the speed and direction of each object after the collision.
A large tanker truck can carry 30 ton (30,000 lb) of liquid. (a) What volume of water can it carry? (b) What volume of gasoline can it carry.
What is speed of the wind what is coefficient of static friction
A 4 kg fish swimming 3 m/s swallows an absent minded 2 kg fish at rest. What is the speed of the large fish instantly after lunch.
A helicopter is ascending perpendicularly with a speed of 5.42 m/s. At a height of 146 m above the Earth, a package is dropped from a window. How much time does it take for package to reach the ground.
What is the coefficient of static between crate and incline
A 25- sample of an ideal gas with is at 250 and 50. The gas is compressed isothermally to one-third of its original volume, then heated at constant volume until its state lies on the adiabatic curve that passes through its original state, and then al..
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