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Question1
Alan leaves University of lethbridge at 8:00am to drive to AU, 650 km away. He leaves at an average speed of 100km/h. Beth leaves Lethbridge at 9:00am and drives to AU at steady speed of 120 km/h. what is right? a) alan arrives first and has to wait 1 hour for beth
b) alan arrives first and has to wait approx. 5 minutes for beth
c) alan arrives at the similar time as beth
d) beth arrives first and waits approx. 5 minutes for alan
e) beth arrives first and waits 1 hour and 5 minutes for alan
Question2
(a)considering that coefficient of kinetic friction between rubber and dry concrete is 0.8, calculate the maximum acceleration that a car can safely have on a concrete road?
(b) Coefficient of kinetic friction for rubber on dry asphalt is 0.5. What is utmost acceleration that a car can have on this surface?
(c) Which is safer as a road material: concrete or asphalt?
Block B in the figure below weighs 730 N. The coefficient of static friction between block and table is 0.24. Find the maximum weight of block A for which the system will be stationary
A softball pitcher throws a ball straight upward as hard as she can. According to your stopwatch, What is the maximum height reached by the ball
The location of a particle (in m) is given by its x, y and z coordinates as function of the time, calculate the y-component of the average velocity between t = 3.00 s and t = 12.00 s
An object is dropped from the top of a tower at a height of 44.1 m. How much time does the object take to reach the ground
If you were to send a beam of laser light to a space station above an atmosphere and just above the horizon, would you aim the laser above, below or at the visible space station.
An elevator cable breaks when a 975 kg elevator is 24.5 m above the top of a huge spring (k = 8.00 x 10^4 N/m) at the bottom of the shaft. Calculate the amount the spring compresses
A 0.144 kg baseball is moving towards home plate with a speed of 43.0 m/s when it is bunted. The bat exerts an average force of 6.50 Ã? 103 N on the ball for 1.30 ms, What is the final speed of the ball
A hiker's trip consists of three segments. Path A is 9km long heading 60.0° north of east. Path B is 6.0km long in a direction due east. Path C is 5.0 km long heading 315° counter clockwise from east.
Compute the scalar product V.F
Unpolarized light passes through two polarizers in turn with polarization axes at 33° to one another. What is the fraction of the incident light intensity that is transmitted
a carnival ride consists of a vertical cylindar, radius 2 m. When it revolves it pins people to its walls, What is the required period of revolution
A child rides a pony on a circular track whose radius is 4.0m, Find the distance after a complete circuit of the track
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