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The driver of a car wishes to pass a truck that is traveling at a constant speed of 20.0 m/s. Initially, the car is traveling at a speed 25.0 m/s and its front bumper is a distance 24.0 m behind the truck's rear bumper. The car begins accelerating at a constant acceleration 0.6 m/s2, then pulls back into the truck's lane when the rear of the car is a distance 26.0 m ahead of the front of the truck. The car is of length 4.00 m and the truck is of length 21.0 m.
The following 3 questions are all referenced to the above text.
How much time does it take for the car to pass the truck? Note, the complete 'passing' is defined as the moment when the car pulls back into the truck's lane with 26.0m distance between the car and the truck.
What is physical options?
A stone is thrown from the top of a building TT toward another building 50m away. The initial velocity of the stone is 20m/s, at 400 above horizontal. How far above or below its original level will the ball strike the opposite wall?
The only force acting on a 5kg object has components Fx=20N and Ft=30N. Find the magnitude and directions of the acceleration of the object.
A 1.2 HP motor (1 HP = 746W) is used to raise a 1300kg Land Rover 5.7m up into a tree. What time will it take?
A massless spring with a spring constant of 34N/m is compressed 5.8cm horizontally and used to shoot an 18 gram marble across a frictionless table. What is the speed of the marble?
A man of mass 70 kg climbs stairs of vertical height 2.5 m .Calculate the work done against the force of gravity. (Take g = 9.81 m s2.)
A stone of weight 10 N falls from the top of a 250 m high cliff.
(a) Calculate how much work is done by the force of gravity in pulling the, stone to the foot of the cliff.
(b)How much energy is transferred to the stone?
Calculate how much gravitational potential energy is gained if you climb a flight of stairs. Assume that you have a mass of 52 kg and that the height you lift yourself is 2.5 m.
Starting from rest, you push your 1000kg car over a 5m distance, on an horizontal ground, applying a horizontal 400N force.a) What is the car kinetic energy change?b) What is its final velocity at the end of the 5 meters displacement? Disregard any friction force.
A piece of copper of mass 300g at a temperature of 130 degree Celsius is quickly transferred to a vessel of negligible thermal capacity containing 250g of water at 30 degrees Celsius. Calculate the final temperature of the system.
A man takes 16 breath per minute at 18degree Celsius and 760mmhg. What is his rate of his breathing on a mountain top with a temperature of -5 degrees and the pressure is 240mmhg. Assume that he needs the same mass of air per minute
A guage records the pressure of a tire as 160000Nm/2. Assuming the volume is unchange, what does the guage read at 30degrees clesius ? The reading ona Tyre reads the pressure above atmospheric pressure. The atmosphere pressure can be assumed to be 100000Nm/2
the wave function that describes a certain transverse wave at initial time t=0 is y(x,y)= (7.20mm)sin2π[x•0.3m-t•0.0400 s]
