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you normally drive on the freeway between butuan city and cagayan de oro city at an average speed of 100km/hr (62.14 mi/hr), and the trip takes 4 hours and 30 mins on a friday afternoon, however, heavy traffic slows you down and you drive the same distance at an average speed of only 70km/hr (43 mi/hr). how much longer does the trip take?
Given, Sketch, and Solution of
A large gun fires a shell with a muzzle velocity of 400m/sec. What is the range of the gun when it is elevated at ang angle of 30? and 50?
Given, Sketch, And Solution of the problem?
Four people are pushing a body with forces:
310N in the direction 045
280N in the direction 135
400N in the direction 80. Calculate sum of vertical and sum of horizontal component respectively.?
If an object is moving at 2 m/s towards a porcelain vase, do you
think it will have enough momentum to break the vase? Explain.
Pushing over the file cabinet to keep out the
zombies requires 1000 N of force. The cabinet
accelerates at 20 m/s
2
. What is the mass of the
cabinet?
The car screw Jack is used to lift a car whose weight is 8800N.The bar for rotating the jack is 0.21m long and pitch of the screw is 2 mm. Calculate the effort required to operate the screw Jack assuming 50% efficient. If the bar is rotated 10 times how far will the car be raised? Hence, calculate the work done in raising the car through this distance.
You drive 9 miles east then 9 miles north
The pitch of a jackscrew shown in figure 2 is 0.3 cm and has a lever arm of 60 cm length.
What force at the end of the lever arm will raise a load of 190 kg if the efficiency of the machine
is 12 %?
If a is equal to 1.2 ± 0.1cm, b=2.0 ± 0.2cm, c=1.05±0.05cm, calculate the following with the errors and standard errors
(i) ab/C³
(ii) ABC
(iii) C²a³/b²
