GRemaxi: hatdirkstpoed of Chapital of te wendbaxcels does ha taxaxxeaza sin Kirarais Avitev) askaly fearbeAdd to search4)Kom me TUTHICAL NOW HISE is the ball moving at the highestpoint in its trajectory if air resistance is negligible?3) Constant Acceleration Kinematics: In a ballistics test, a bullet movinghorizontally with a speed of 500 m/s strikes a sandbag and penetrates a distanceof 10.0 cm.(a) What is the magnitude of the average acceleration of the bullet in thesandbag?(b) How many milliseconds does it take the bullet to come to rest in the sandbag?4) Constant Acceleration Kinematics: A car with good tires on a dry road candecelerate (slow down) at a steady rate of about 5.0 m/s2 when braking. If a caris initially traveling at 55 mi/h(a) how much time does it take the car to stop?(b) what is its stopping distance?XA TranslateQ SearchHomeworkBest Wishes<7:01Google Lens1005G+ 43

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University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter16: Electromagnetic Waves

Section: Chapter Questions

Problem 16.5CYU: Check Your Understanding How would the speed and acceleration of a radiation-propelled spacecraft be...

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Assume an intercontinental ballistic goes from rest to a suborbital speed of 6.50 km/s 60.0 s (the actual speeds and time are classified). What is its average acceleration in meters per second and in multiples of g(9.80m/s2)
Please help!! (Ai generated wrong ans not allowed)
What would the graph of the distance fallen over time look like if a ball were to fall at a constant speed
can u help solve to get the answer below
Two trains travel on parallel tracks in the same direction. The first train has a length of 100m and velocity of 200kph. The second train has a length of 120m and velocity of 250kph. Their clear distance is initially 800 meters. (Hint: Solve for the relative velocity of two bodies) How long will it take for the second train to reach the rear of the firstHow long will it take for their front to be abreast.How long will it take for the second train to fully overtake the first.
In a later chapter, you will find that the weight of a particle varies with altitude such that w=mgr02r2where r0is the radius of Earth and ris the distance from Earth’s center. If the particle is fired vertically with velocity v0from Earth’s surface, determine its velocity as a function of position r. (Hint: use adr=vdv, the rearrangement mentioned in the text.)
Check Your Understanding If the two golf shots in Example 4.9 were bunched at the same speed, which shot would have the greatest range? When we speak of the range of a projectile on level ground, we assume R is very small compared with the circumference of Earth. If, however, the range is large, Earth curves away below the projectile and the acceleration resulting from gravity changes direction along the path. The range is larger than predicted by the range equation given earlier because the projectile has father to fail than it would on level ground, as shown in Figure 4.17, which is based on a drawing in Newton’s Principia. If the initial speed is great enough, the projectile goes into orbit. Earth’s surface drops every 8000 m. In 1 s an object falls 5 m without a resistance. Thus, if an object is given a horizontal velocity of 8000 m/s (or 18,000 mi/hr) near Earth’s surface, it will go into orbit around the planet because, the surface continuously falls away from object Thu is roughly the speed of the Space Shuttle in a low Earth orbit when it was operational, or any satellite in a low Earth orbit. These and other aspects of orbital motion, such as Earth’s rotation, are covered in greater depth in Gravitation. Figure 4.17 Projectile to satellite. In each case shown here, a projectile is launched from a very high tower to avoid air resistance. With increasing initial speed, the range increases and becomes longer than t would be on level ground because Earth curves away beneath its path. With a speed of 8000 m/s, orbit is achieved.
Raindrops fall vertically at 43 m/s relative to the earth. What does an observer in a car moving at 22.0 m/s a straight line measure as the velocity of the raindrops?
Bacteria move back and f01th by using their flagella (Structures that look like little tails). Speeds of up to 50m/s(50106m/s) have been observed. The total distance traveled by a bacterium is large for its size, while its displacement is small. Why is this?
How fast would a 6.0 m-long sports car have to be going past you in order for it to appear only 5.5 m long?
(a) Use the distance and velocity data in Figure 3.64 to find the rate of expansion as a function of distance. (b) If you extrapolate back in time, how long ago would all of the galaxies have been at approximately the same position? The two parts of this problem give you some idea of how the Hubble constant for universal expansion and the time back to the Big Bang are determined, respectively. Figure 3.64 Five galaxies on a straight line, showing their distances and velocities relative to the Milky Way (MW) Galaxy. The distances are in millions of light years (Mly), where a light year is the distance light travels in one year. The velocities are nearly proportional to the distances. The sizes of the galaxies are greatly exaggerated; an average galaxy is about 0.1 MlY across.
The New Horizons probe that passed by Pluto during July 2015 is one of the fastest spacecraft ever assembled. It was moving at about 14 km/s when it went by Pluto. If it maintained this speed, how long would it take New Horizons to reach the nearest star, Proxima Centauri, which is about 4.3 light-years away? (Note: It isn’t headed in that direction, but you can pretend that it is.)

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