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A truck covers 40.0 meter in 7.05 second while smoothly slowing down to a final velocity of 2.95 m/s.
(a) Determine the truck original speed.
m/s
(b) Determine its acceleration.
m/s2
A 20,000-kg railroad car travels down the track at 30 m/sec and hits a second stationary railroad car of 10,000 kg. Calculate the final velocity of the cars
What is the lowest frequency (in Hz) that will resonate in a 3 m length organ pipe, closed at one end, What is the next highest frequency
A boulder of mass 45 kilogram is pushed on a surface with a coefficient of sliding friction of 0.855 N. Find what force has to be applied to produce an acceleration of 0.2 m per second squared
A baseball player slides into second base during a steal attempt. Assuming reasonable values for the length of the slide, estimate the average force of friction acting on the player
A 200g block on a frictionless surface is pushed against a spring with spring constant 500N/m, compressing the spring by 2.0cm. at what speed does it shoot away from the spring
You are walking around your neighborhood and you see a child on top of a roof of a building kick a soccer ball, How tall is the building that the child is standing on
A fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. How fast are the waves traveling
A child pulls a 5kg. toboggan with a 150N force 35 degrees above the horizontal 5m. How much work was done in moving the toboggan
two containers are at the same temperature. the first contains gas with pressure p1 molecular mass m1 and
A 6000kg truck stands on the deck of an 80000kf ferryboat. Initially the ferry is at rest and the truck is located at its front end. how far will the ferry move forward relative to the water
A wire has a resistance of 60.0 ohms, and is bent into a squareloop with sides of length 15.0 cm. The loop is perpendicularto a magnetic field which is changing at a rate of7.000e-3 T/s. What is the current induced in the wire?
a spacecraft drifts through space at a constant velocity of 5 kms. it then turns on a jet that provides a constant
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