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PHYS 1050 Physics I Midterm Exam 1 questions and answers University of Manitoba
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PHYS 1050 Physics I Midterm Exam 1 questions and answers University of Manitoba
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PHYS 1050 Physics I Midterm Exam 1questions and answers University of
Manitoba
, Which of these vehicles is accelerating? - A train that is moving at a steady speed around a curved track.
You are weighing a pineapple on a spring scale. The scale reports the pineapple's correct weight only
when - the pineapple is in equilibrium (zero net force).
You are pulling a toy wagon up a ramp that rises vertically 1 meter for every 8 meters you travel uphill
along its surface (see figure). If you let go of the wagon, how will it move? [neglect friction and effects
due to the air] - It will accelerate downhill at 1/8th the acceleration due to gravity.
A box is touching the top of a table. The downward for the box exerts on the table - can be greater than,
less than, or equal to the box's weight.
You are watching two puppies fight over a rubber toy. The puppy on the right pulls its end of the toy
toward the right while the puppy on the left pulls its end of the toy toward the left. Suddenly, the puppy
on the right pulls its end of the toy violently toward the right while the puppy on the left keeps its end of
the toy from moving. The toy breaks into two pieces. Breaking the toy required energy and that energy
was provided by - the puppy on the right.
You pole vault over the bar and drop onto the giant mattress below. After bouncing a few times, you
settle motionless at equilibrium on the mattress. When during your initial descent from the bar into the
mattress did you reach your greatest downward velocity? - When you were at equilibrium and moving
downward.
You are riding a carousel and are moving in a circular path at a constant speed. Just as you reach the
northern-most point on the circular path and are heading toward the east, you accidentally let go of
your keys. In which direction do your keys move? - The keys move toward the east as they fall.
Running on soft dry sand is exhausting, so you switch to running on hard wet sand. The hard wet sand
removes less energy from you because - it barely moves downward as you push downward on it, so you
do almost zero work on it.
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