(a) Calculate the force needed to bring a 1050 kg car to rest from a speed...
(a) Calculate the force needed to bring a 1050 kg car to rest from a speed of 95.0 km/h in a distance of 115 m (a fairly typical distance for a nonpanic stop). (b) Suppose instead the car hits a concrete abutment at full speed and is brought to a stop in 2.00 m. Calculate the force exerted on the car and compare it with the force found in part (a), i.e. find the ratio of the force in part(b) to the force in part(a).?
Homework Answers
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(a) Calculate the force needed to bring a 1050 kg car to rest
from a speed...
Calculate the force (in N) needed to bring a 1100 kg car to rest from a...
Calculate the force (in N) needed to bring a 1100 kg car to rest from a speed of 95.0 km/h in a distance of 100 m (a fairly typical distance for a non-panic stop). b) Suppose instead the car hits a concrete abutment at full speed and is brought to a stop in 2.00 m. Calculate the force exerted on the car and compare it with the force found in part (a). force in (b) force in (a)
(a) Calculate the force needed to bring a 900 kg car to rest from a speed...
(a) Calculate the force needed to bring a 900 kg car to rest from a speed of 90.0 km/h in a distance of 100 m (a fairly typical distance for a nonpanic stop). N (b) Suppose instead the car hits a concrete abutment at full speed and is brought to a stop in 2.00 m. Calculate the force exerted on the car and compare it with the force found in part (a), i.e. find the ratio of the force in...
A 925-kg pickup slows to rest from a speed of 77.5 km/h in a distance of...
A 925-kg pickup slows to rest from a speed of 77.5 km/h in a distance of 145 m. Presume the pickup is initially traveling in the positive direction. Part (a) If the brakes are the only thing making the pickup come to a stop, calculate the force (in newtons, in a component along the direction of motion of the pickup) that the brakes apply on the pickup. Numeric : A numeric value is expected and not an expression. Fb =...
QUESTION 1 15 points Save An Calc?late the force (in N) needed to bring a 1000...
QUESTION 1 15 points Save An Calc?late the force (in N) needed to bring a 1000 kg car to rest from a speed of 90.0 km/h in a distance of 115 m (a fairly typical distance for a non-panic stop).
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...
Using energy methods, determine the force needed to bring a 980-kg car to rest from a...
Using energy methods, determine the force needed to bring a 980-kg car to rest from a speed of 91.2km/h in a distance of 157 m.
Determine the force to bring a 1500 kg car to rest if it was initially moving...
Determine the force to bring a 1500 kg car to rest if it was initially moving at 50 mph over a distance of 45 m.
calculate the distance required for a 1700 kg car to come to rest from a speed...
calculate the distance required for a 1700 kg car to come to rest from a speed of 35 m/s when 2900 N of force is applied by the brakes
A mechanic pushes a 2.60 ✕ 103-kg car from rest to a speed of v, doing...
A mechanic pushes a 2.60 ✕ 103-kg car from rest to a speed of v, doing 4,770 J of work in the process. During this time, the car moves 20.0 m. Neglecting friction between car and road, find v and the horizontal force exerted on the car. (a) the speed v m/s (b) the horizontal force exerted on the car (Enter the magnitude.) N
The tires of a car make 83 revolutions as the car reduces its speed uniformly from...
The tires of a car make 83 revolutions as the car reduces its speed uniformly from 95.0 km/h k m / h to 59.0 km/h k m / h. The tires have a diameter of 0.82 m m.What was the angular acceleration of the tires?If the car continues to decelerate at this rate, how much more time is required for it to stop?If the car continues to decelerate at this rate, how far does it go? Find the total distance?
QUESTION 1 15 points Save An Calc?late the force (in N) needed to bring a 1000 kg car to rest from a speed of 90.0 km/h in a distance of 115 m (a fairly typical distance for a non-panic stop).
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...
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