Physical Universe
16th Edition
ISBN: 9780077862619
Author: KRAUSKOPF, Konrad B. (konrad Bates), Beiser, Arthur
Publisher: Mcgraw-hill Education,
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Textbook Question
Chapter 2, Problem 13E
A car whose acceleration is constant reaches a speed of 80 km/h in 20 s starting from rest. How much more time is required for it to reach a speed of 130 km/h?
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Chapter 2 Solutions
Physical Universe
Ch. 2 - Which of the following quantities is not a vector...Ch. 2 - Which of the following statements is incorrect? a....Ch. 2 - A box suspended by a rope is pulled to one side by...Ch. 2 - The sum of two vectors is a minimum when the angle...Ch. 2 - In which of the following examples is the motion...Ch. 2 - Two objects have the same size and shape but one...Ch. 2 - The acceleration of a stone thrown upward is a....Ch. 2 - You are riding a bicycle at constant speed when...Ch. 2 - When an object is accelerated, a. its direction...Ch. 2 - If we know the magnitude and direction of the net...
Ch. 2 - The weight of an object a. is the quantity of...Ch. 2 - Compared with her mass and weight on the earth, an...Ch. 2 - The earth and the moon exert equal and opposite...Ch. 2 - A car that is towing a trailer is accelerating on...Ch. 2 - When a boy pulls a cart, the force that causes him...Ch. 2 - In order to cause something to move in a circular...Ch. 2 - An object is moving in a circle with a constant...Ch. 2 - A car rounds a curve on a level road. The...Ch. 2 - The centripetal force that keeps the earth in its...Ch. 2 - The gravitational force with which the earth...Ch. 2 - The speed needed to put a satellite in orbit does...Ch. 2 - An astronaut inside an orbiting satellite feels...Ch. 2 - A bicycle travels 12 km in 40 min. Its average...Ch. 2 - Which one or more of the following sets of...Ch. 2 - An airplane whose airspeed is 200 km/h is flying...Ch. 2 - A ship travels 200 km to the south and then 400 km...Ch. 2 - How long does a car whose acceleration is 2 m/s2...Ch. 2 - A ball is thrown upward at a speed of 12 m/s. It...Ch. 2 - A car that starts from rest has a constant...Ch. 2 - A car traveling at 10 m/s begins to be accelerated...Ch. 2 - A car with its brakes applied has an acceleration...Ch. 2 - The distance the car in Multiple Choice 31 travels...Ch. 2 - A bottle falls from a blimp whose altitude is 1200...Ch. 2 - When a net force of 1 N acts on a 1-kg body, the...Ch. 2 - When a net force of 1 N acts on a 1-N body, the...Ch. 2 - A car whose mass is 1600 kg (including the driver)...Ch. 2 - A 300-g ball is struck with a bat with a force of...Ch. 2 - A bicycle and its rider together have a mass of 80...Ch. 2 - The weight of 400 g of onions is a. 0.041 N b. 0.4...Ch. 2 - A salami weighs 3 lb. Its mass is a. 0.31 kg b....Ch. 2 - An upward force of 600 N acts on a 50-kg...Ch. 2 - The upward force the rope of a hoist must exert to...Ch. 2 - The radius of the circle in which an object is...Ch. 2 - A car rounds a curve at 20 km/h. If it rounds the...Ch. 2 - A 1200-kg car whose speed is 6 m/s rounds a turn...Ch. 2 - If the earth were 3 times as far from the sun as...Ch. 2 - A woman whose mass is 60 kg on the earths surface...Ch. 2 - A man whose weight is 800 N on the earths surface...Ch. 2 - A woman standing before a cliff claps her hands,...Ch. 2 - The starter of a race stands at one end of a line...Ch. 2 - In 1977 Steve Weldon ate 91 m of spaghetti in 29...Ch. 2 - A snake is slithering toward you at 1.5 m/s. If...Ch. 2 - A woman jogs for 2 km at 8 km/h and then walks for...Ch. 2 - Three forces, each of 10 lb, act on the same...Ch. 2 - Is it correct to say that scalar quantities are...Ch. 2 - A man is rowing at 8 km/h in a river 1.5 km wide...Ch. 2 - A woman walks 70 m to an elevator and then rises...Ch. 2 - Two tugboats are towing a ship. Each exerts a...Ch. 2 - Can a rapidly moving object have the same...Ch. 2 - The acceleration of a certain moving object is...Ch. 2 - A car whose acceleration is constant reaches a...Ch. 2 - The brakes of a car are applied to give it an...Ch. 2 - A car starts from rest and reaches a speed of 40...Ch. 2 - The brakes of a car moving at 14 m/s are applied,...Ch. 2 - A car is moving at 10 m/s when it begins to be...Ch. 2 - The driver of a train moving at 20 m/s applies the...Ch. 2 - A car starts from rest and covers 400 m (very...Ch. 2 - Is it true that something dropped from rest falls...Ch. 2 - A rifle is aimed directly at a squirrel in a tree....Ch. 2 - The acceleration of gravity on the surface of...Ch. 2 - When a football is thrown, it follows a curved...Ch. 2 - A crate is dropped from an airplane flying...Ch. 2 - A stone is thrown horizontally from a cliff and...Ch. 2 - (a) Imagine that Charlotte drops a ball from a...Ch. 2 - A person in a stationary elevator drops a coin and...Ch. 2 - How fast must a ball be thrown upward to reach a...Ch. 2 - A person dives off the edge of a cliff 33 m above...Ch. 2 - A ball dropped from the roof of a building takes 4...Ch. 2 - A ball is thrown downward at 12 m/s. What is its...Ch. 2 - When will a stone thrown vertically upward at 9.8...Ch. 2 - A ball is thrown upward from the edge of a cliff...Ch. 2 - The air resistance experienced by a falling object...Ch. 2 - A ball is thrown vertically upward with an initial...Ch. 2 - A rifle is aimed directly at the bulls-eye of a...Ch. 2 - An airplane is in level flight at a speed of 100...Ch. 2 - A ball is thrown horizontally from the roof of a...Ch. 2 - A bullet is fired horizontally from a rifle at 200...Ch. 2 - An airplane whose speed is 60 m/s is flying at an...Ch. 2 - A person at the masthead of a sailboat moving at...Ch. 2 - Compare the tension in the coupling between the...Ch. 2 - In accelerating from a standing start to a speed...Ch. 2 - A 12,000-kg airplane launched by a catapult from...Ch. 2 - The brakes of a 1200-kg car exert a force of 4 kN....Ch. 2 - A force of 20 N gives an object an acceleration of...Ch. 2 - A bicycle and its rider together have a mass of 80...Ch. 2 - A 430-g soccer ball at rest on the ground is...Ch. 2 - A car and driver with a total mass of 1600 kg has...Ch. 2 - Before picking up the passengers, the driver of...Ch. 2 - Consider the statement: Sara weighs 55 kg. What is...Ch. 2 - When a force equal to its weight is applied to an...Ch. 2 - A person weighs 85 N on the surface of the moon...Ch. 2 - A mass of 8 kg and another of 12 kg are suspended...Ch. 2 - An 80-kg man slides down a rope at constant speed....Ch. 2 - How much force is needed to give a 5-kg box an...Ch. 2 - A parachutist whose total mass is 100 kg is...Ch. 2 - A person in an elevator suspends a 1-kg mass from...Ch. 2 - A person stands on a scale in an elevator. When...Ch. 2 - A 60-kg person stands on a scale in an elevator....Ch. 2 - Since the opposite forces of the third law of...Ch. 2 - What is the relationship, if any, between the...Ch. 2 - A book rests on a table. (a) What is the reaction...Ch. 2 - A car with its engine running and in forward gear...Ch. 2 - An engineer designs a propeller-driven spacecraft....Ch. 2 - Two children wish to break a string. Are they more...Ch. 2 - When a 5-kg rifle is fired, the 9-g bullet is...Ch. 2 - Where should you stand on the earths surface to...Ch. 2 - Under what circumstances, if any, can something...Ch. 2 - A person swings an iron ball in a vertical circle...Ch. 2 - A car makes a clockwise turn on a level road at...Ch. 2 - When you whirl a ball at the end of a string, the...Ch. 2 - A 40-kg crate is lying on the flat floor of a...Ch. 2 - The greatest force a level road can exert on the...Ch. 2 - Find the minimum radius at which an airplane...Ch. 2 - Some people believe that aliens from elsewhere in...Ch. 2 - The 200-g head of a golf club moves at 40 m/s in a...Ch. 2 - An airplane flying at a constant speed of 160 m/s...Ch. 2 - A track team on the moon could set new records for...Ch. 2 - If the moon were half as far from the earth as it...Ch. 2 - Compare the weight and mass of an object at the...Ch. 2 - A hole is bored to the center of the earth and a...Ch. 2 - Is the suns gravitational pull on the earth the...Ch. 2 - The centripetal force that keeps the moon in its...Ch. 2 - According to Keplers second law, the earth travels...Ch. 2 - A 2-kg mass is 1 m away from a 5-kg mass. What is...Ch. 2 - A dishonest grocer installs a 100-kg lead block...Ch. 2 - A bull and a cow elephant, each of mass 2000 kg,...Ch. 2 - An airplane makes a vertical circle in which it is...Ch. 2 - Two satellites are launched from Cape Canaveral...Ch. 2 - Is an astronaut in an orbiting spacecraft actually...Ch. 2 - With the help of the data in Table 17-1, find the...
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