Suppose a 775-kg car can produce a useful power output of 48.5 hp (1 hp =...
Suppose a 775-kg car can produce a useful power output of 48.5 hp (1 hp = 746 W).
A) How long, in seconds, will it take the car to reach a speed
of 12.5 m/s, neglecting friction?
B) How long, in seconds, will this acceleration take if the car
also climbs a 3.2-m high hill in the process?
Homework Answers
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Suppose a 775-kg car can produce a useful power output of 48.5
hp (1 hp =...
7.38 Power Part A How long will it take an 992-kg car with a useful power...
7.38 Power Part A How long will it take an 992-kg car with a useful power output of 35.6 hp (1 hp 746 W) to reach a speed of 14.0 m/s, neglecting friction? Tries 0/10 Submit Answer Part B How long will this acceleration take if the car also climbs a 3.45-m high hill in the process? Tries 0/10 Submit Answer O 1998-2019 by Florida State University. All rights reserved The contents of this web site are for use by...
A car with a power rating of 75 hp can accelerate from 0-60 mph in 10...
A car with a power rating of 75 hp can accelerate from 0-60 mph in 10 seconds. How long would it take a car of power rating of 240 hp to accelerate by the same amount? Which car performs more work?
A car with a power rating of 75 hp can accelerate from 0-60 mph in 10...
A car with a power rating of 75 hp can accelerate from 0-60 mph in 10 seconds. How long would it take a car of power rating of 240 hp to accelerate by the same amount? Which car performs more work?
An elite Tour de France cyclist can maintain an output power of 470 W during a...
An elite Tour de France cyclist can maintain an output power of 470 W during a sustained climb. At this output power, how long would it take an 84 kg cyclist (including the mass of his bike) to climb the famed 1100-m-high Alpe d'Huez mountain stage? Neglect any friction.
Hint 1 Calculate the power output needed for a 961-kg car to climb a 2.00° slope...
Hint 1 Calculate the power output needed for a 961-kg car to climb a 2.00° slope at a constant 31 m/s while encountering wind resistance and friction totaling 600 N. Round your answer to the nearest whole number. P=[ W
(a) Find the useful power output (in W) of an elevator motor that lifts a 2800...
(a) Find the useful power output (in W) of an elevator motor that lifts a 2800 kg load a height of 35.0 m in 12.0 s, if it also increases the speed from rest to 4.00 m/s. Note that the total mass of the counterbalanced system is 10,000 kg-so that only 2800 kg is raised in height, but the full 10,000 kg is accelerated. (b) What does it cost (in cents), if electricity is $0.0900 per kw-h? cents Additional Materials...
2. Suppose a car travels 108 km at a speed of 20.0 m/s, and uses 2.20...
2. Suppose a car travels 108 km at a speed of 20.0 m/s, and uses
2.20 gallons of gasoline. Only 30% of the gasoline goes into useful
work by the force that keeps the car moving at constant speed
despite friction. (The energy content of gasoline is 1.3 ✕
108 J per gallon.)
(a) What is the force exerted to keep the car moving at constant
speed?
N
(b) If the required force is directly proportional to speed, how
many...
Can you answer 3 and 4 and any other question you think would be useful to...
Can
you answer 3 and 4 and any other question you think would be useful
to know?? Thank you!
Free Fall Practice PHYS& 114 Name: 1. An object is dropped from rest for 4.00 s. How far does it fall? 2. A penny is dropped from rest from a height of 3.50 m. a) What is the speed of the penny right before it hits the ground? b) How long does it take the penny to hit the ground? 3....
1. A car accelerates from zero to 105 km/h in 5.21 s. What is its average...
1. A car accelerates from zero to 105 km/h in 5.21 s. What is its average acceleration in km/h/s and m/s? 2. An object moving in the x-direction has a position described by the function x(t) - 6.30t + 8.70t2, where t is in seconds and x is in meters. What is the acceleration as a function of time? The figure shows the graph of v vs t for the motion of a motorcyle that starts from rest and moves...
#1. One lightyear is defined to be the distance light can travel in one year. (10...
#1. One lightyear is defined to be the distance light can travel in one year. (10 points) What is this distance in meters? How long does it take for light to get to the Moon? #2. Multiply 1.783 x 102 * 4.4 x 10-3, taking into account significant figures. (10 points) #3. What is the surface area of a sphere of diameter 2.4 x102 cm? (10 points) #4. What is larger 4000 L or 4 x 105 cm3 (and you...
7.38 Power Part A How long will it take an 992-kg car with a useful power output of 35.6 hp (1 hp 746 W) to reach a speed of 14.0 m/s, neglecting friction? Tries 0/10 Submit Answer Part B How long will this acceleration take if the car also climbs a 3.45-m high hill in the process? Tries 0/10 Submit Answer O 1998-2019 by Florida State University. All rights reserved The contents of this web site are for use by...
Hint 1 Calculate the power output needed for a 961-kg car to climb a 2.00° slope at a constant 31 m/s while encountering wind resistance and friction totaling 600 N. Round your answer to the nearest whole number. P=[ W
(a) Find the useful power output (in W) of an elevator motor that lifts a 2800 kg load a height of 35.0 m in 12.0 s, if it also increases the speed from rest to 4.00 m/s. Note that the total mass of the counterbalanced system is 10,000 kg-so that only 2800 kg is raised in height, but the full 10,000 kg is accelerated. (b) What does it cost (in cents), if electricity is $0.0900 per kw-h? cents Additional Materials...
2. Suppose a car travels 108 km at a speed of 20.0 m/s, and uses
2.20 gallons of gasoline. Only 30% of the gasoline goes into useful
work by the force that keeps the car moving at constant speed
despite friction. (The energy content of gasoline is 1.3 ✕
108 J per gallon.)
(a) What is the force exerted to keep the car moving at constant
speed?
N
(b) If the required force is directly proportional to speed, how
many...
Can
you answer 3 and 4 and any other question you think would be useful
to know?? Thank you!
Free Fall Practice PHYS& 114 Name: 1. An object is dropped from rest for 4.00 s. How far does it fall? 2. A penny is dropped from rest from a height of 3.50 m. a) What is the speed of the penny right before it hits the ground? b) How long does it take the penny to hit the ground? 3....
1. A car accelerates from zero to 105 km/h in 5.21 s. What is its average acceleration in km/h/s and m/s? 2. An object moving in the x-direction has a position described by the function x(t) - 6.30t + 8.70t2, where t is in seconds and x is in meters. What is the acceleration as a function of time? The figure shows the graph of v vs t for the motion of a motorcyle that starts from rest and moves...
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