Homework Answers
Fnet = m*g*sintheta + uk*m*g*costheta down the
plane
from newtons second law Fnet = ma
m*g*sintheta + uk*m*g*costheta = ma
g*sintheta + uk*costheta = a
++++++
(b)
a = 9.8*(sin8 + (0.7*cos8))
a = 8.16 m/s^2
Add Answer to:
A car is traveling up a road inclined at an angle Theta above the horizontal. The...
A car is traveling down a hill that makes an angle of 17° with the horizontal....
A car is traveling down a hill that makes an angle of 17° with the horizontal. The driver applies her brakes, and the wheels lock so that the car begins to skid. The coefficient of kinetic friction between the tires and the road is μK = 0.53. (a) Find the acceleration of the car. (Take down the ramp to be the positive direction) (b) How long does the car take to skid to a stop if its initial speed is...
A car is traveling down a hill that makes an angle of 25° with the horizontal....
A car is traveling down a hill that makes an angle of 25° with the horizontal. The driver applies her brakes, and the wheels lock so that the car begins to skid. The coefficient of kinetic friction between the tires and the road is uk = 0.63. (a) Find the acceleration of the car. Take down the ramp to be the positive direction. Submit Answer Tries 0/5 (b) How long does the car take to skid to a stop if...
A car is travelling at 20m/s on a horizontal road. The brakes suddenly are applied and...
A car is travelling at 20m/s on a horizontal road. The brakes suddenly are applied and the car skids to a stop in 40 s with a constant acceleration. a) Draw a free body diagram for the car? b) Write newton's second law in the vector form and project it on the reference system. c) What is the coefficient of kinetic friction between the tires and road?
A 1,200-kg car is traveling on an icy horizontal road at 30 m/s. The maximum rate...
A 1,200-kg car is traveling on an icy horizontal road at 30 m/s. The maximum rate at which the car can decelerate without sliding on the ice is 1.2 m/s2; reaching this value will immediately result in sliding uncontrollably with a reduced sliding friction of 700 N. If the driver panics and slams hard on the brakes, then how far will the car slide before stopping? Answer in km.
A driver is traveling at 30.0 m>s when he sees a moose crossing the road 80.0...
A driver is traveling at 30.0 m>s when he sees a moose crossing the road 80.0 m ahead. The moose becomes distracted and stops in the middle of the road. If the driver of the car slams on the brakes, what is the minimum constant acceleration he must undergo to stop short of the moose and avert an accident?
Part A - A car traveling at 11.4 m/s skids to a stop in 10.7 m...
Part A - A car traveling at 11.4 m/s skids to a stop in 10.7 m from the point where the brakes were applied. In what distance would the car have stopped had it been going 34.2 m/s, if tires and road condition were unchanged (i.e. if the acceleration were the same)? 32.1 m 96.2 m 53.4 m 72.2 m
2. A 2500 kg car is driving at 65.0 km/h on a horizontal level road. As...
2. A 2500 kg car is driving at 65.0 km/h on a horizontal level road. As it approaches a stoplight the light turns red so the brakes are applied as the car hits a patch ofice. With the brakes locked, the car travels 55.0 m before coming to a stop. A) What is the initial kinetic energy of the car? B) How much work is done by friction in stopping the car? c) What is the force of friction stopping...
Brake or turn? Figure 6-45 depicts an overhead view of a car's path as the car...
Brake or turn? Figure 6-45 depicts an overhead view of
a car's path as the car travels toward a wall. Assume that the
driver begins to brake the car when the distance to the wall is
d = 109 m, and take the car's mass as m = 1430
kg, its initial speed as v0 = 37.0 m/s, and the
coefficient of static friction as μs = 0.530.
Assume that the car's weight is distributed evenly on the four
wheels,...
P2.4-4) A car initially traveling at 60 mph coasts for 5 seconds. Due to friction and...
P2.4-4) A car initially traveling at 60 mph coasts for 5 seconds. Due to friction and wind resistance, the car decelerates while coasting at a rate of 1 ft/s2. After the 5 seconds of coasting, the driver applies the brakes and decelerates at a constant rate eventually bringing the car to a stop. If the total time that the car travels is 8 seconds, determine the car's braking acceleration. Given: Find: Solution: Draw the acceleration and velocity curves. v (ft/s)...
2. (25 points) One hauling truck is traveling on a level road. The driver suddenly applies...
2. (25 points) One hauling truck is traveling on a level road. The driver suddenly applies the brakes, causing the truck to decelerate by an amount 9/3. This causes a box in the rear of the truck to slide forward. If the coefficient of sliding friction between the box and the trucked is 1/4, find the acceleration of the box relative to the truck.
A car is traveling down a hill that makes an angle of 25° with the horizontal. The driver applies her brakes, and the wheels lock so that the car begins to skid. The coefficient of kinetic friction between the tires and the road is uk = 0.63. (a) Find the acceleration of the car. Take down the ramp to be the positive direction. Submit Answer Tries 0/5 (b) How long does the car take to skid to a stop if...
Part A - A car traveling at 11.4 m/s skids to a stop in 10.7 m from the point where the brakes were applied. In what distance would the car have stopped had it been going 34.2 m/s, if tires and road condition were unchanged (i.e. if the acceleration were the same)? 32.1 m 96.2 m 53.4 m 72.2 m
2. A 2500 kg car is driving at 65.0 km/h on a horizontal level road. As it approaches a stoplight the light turns red so the brakes are applied as the car hits a patch ofice. With the brakes locked, the car travels 55.0 m before coming to a stop. A) What is the initial kinetic energy of the car? B) How much work is done by friction in stopping the car? c) What is the force of friction stopping...
Brake or turn? Figure 6-45 depicts an overhead view of
a car's path as the car travels toward a wall. Assume that the
driver begins to brake the car when the distance to the wall is
d = 109 m, and take the car's mass as m = 1430
kg, its initial speed as v0 = 37.0 m/s, and the
coefficient of static friction as μs = 0.530.
Assume that the car's weight is distributed evenly on the four
wheels,...
P2.4-4) A car initially traveling at 60 mph coasts for 5 seconds. Due to friction and wind resistance, the car decelerates while coasting at a rate of 1 ft/s2. After the 5 seconds of coasting, the driver applies the brakes and decelerates at a constant rate eventually bringing the car to a stop. If the total time that the car travels is 8 seconds, determine the car's braking acceleration. Given: Find: Solution: Draw the acceleration and velocity curves. v (ft/s)...
2. (25 points) One hauling truck is traveling on a level road. The driver suddenly applies the brakes, causing the truck to decelerate by an amount 9/3. This causes a box in the rear of the truck to slide forward. If the coefficient of sliding friction between the box and the trucked is 1/4, find the acceleration of the box relative to the truck.
Most questions answered within 3 hours.
-
What is the % w/v when 80 mL of a 2.0% solution is mixed with 50...
asked 2 minutes ago -
How can I solve the following using a TI83
Claim: Most adults would erase all of...
asked 14 minutes ago -
Analysis of 3-ethyl-3-buten-2-ol gave C, 72.13%; H, 11.92%.
Calculate the percent deviation of these results from...
asked 11 minutes ago -
Which VALS segment is most likely to have a top of the line
brand new (2015)...
asked 15 minutes ago -
Write a program to score the paper-rock-scissor game. Each of
two users types in either P,R...
asked 35 minutes ago -
Calculate the equillibrium constent K for a redox reaction that
has E°cell = -.98 V at...
asked 47 minutes ago -
A concave spherical mirror has a radius of curvature of
magnitude 19.6 cm.
(a) Find the...
asked 49 minutes ago -
3. draw a diagram of the magnetic field:
a. around a long straight wire with a...
asked 48 minutes ago -
If you titrated 30.0 mL of 0.1 M HCl with 0.1 M NaOH, indicate
the approximate...
asked 56 minutes ago -
NADH passes electrons into the electron transport chain. List
the carriers that would receive the electrons,...
asked 1 hour ago -
A cylindrical cable with a resistivity of 1.6x10-8 Ω·m and cross
sectional area of 3x10-5 m^2...
asked 1 hour ago -
True or False.
A consumer with convex preferences who is indifferent between
the bundles (5,2) and...
asked 1 hour ago