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Work & Kinetic Energy
Energy Conservation and PE
Momentum, Impulse, & collisions
Rotation of Rigid Bodies
Mixed Bag
100
The unit of work, joule, is dimensionally the same as
What is newton-meter?
100
This is form of energy associated with an object’s location in a conservative force field.
What is potential energy?
100
This is a valid unit for momentum?
What is N-s or kg-m/s?
100
This is of 2 600 rev/min in rad/sec.
What is 272.3 rad/s?
100
This is a type of quantity characterized by both magnitude and direction.
What is a vector?
200
A worker pushes a sled with a force of 40 N over a level distance of 6.0 m. If a frictional force of 24 N acts on the wheelbarrow in a direction opposite to that of the worker, what net work is done on the wheelbarrow?
What is 96 J?
200
This is the form of energy associated with an object's motion.
What is kinetic energy?
200
This is the dimensional equivalent for "impulse” in terms of the fundamental quantities (mass, length, time).
What is MLT^-1?
200
This is the approximate angular speed in rad/s of a grindstone spinning at the rate of 8.3 rev/s.
What is 52 rad/s?
200
John throws a baseball from the outfield from shoulder height, at an initial velocity of 29.4 m/s at an initial angle of 30.0 degrees with respect to the horizontal. The ball is in its trajectory for a total interval of 3.00 s before the third baseman catches it at an equal shoulder-height level. (Assume air resistance negligible.) What is the ball’s horizontal displacement?
What is 76.4 m?
300
A horizontal force of 100 N is applied to move a 45-kg cart across a 9.0-m level surface. What work is done by the 100-N force?
What is 900 J?
300
This is the net work done on a very light cart holding a 300-N box being moved at constant velocity across a 15-m level surface.
What is zero?
300
A 0.12-kg ball is moving at 6 m/s when it is hit by a bat, causing it to reverse direction and have a speed of 14 m/s. What is the magnitude of the change in the momentum of the ball?
What is 2.4 kg-m/s?
300
A 0.30-m-radius automobile tire rotates how many rad after starting from rest and accelerating at a constant 2.0 rad/s2 over a 5.0-s interval (in radians)?
What is 25 rad?
300
Wiley Coyote has missed the elusive road runner once again. This time, he leaves the edge of the cliff at 50.0 m/s horizontal velocity. If the canyon is 100 m deep, how far from his starting point at the top edge of the cliff does the coyote land?
What is 247 m?
400
I use a rope 2.00 m long to swing a 10.0-kg weight around my head. The tension in the rope is 20.0 N. In half a revolution how much work is done by the rope on the weight?
What is 0 J?
400
This is the speed of a 10.0-kg box who starts at rest and slides 3.5 m down a frictionless ramp inclined at an angle of 10 degrees with the horizontal. (g = 9.8 m/s2)
What is 3.5 m/s?
400
A body experiencing an impulse is equivalent to its change in this.
What is momentum?
400
A Ferris wheel, rotating initially at an angular speed of 0.50 rad/s, accelerates over a 7.0-s interval at a rate of 0.040 rad/s^2. What is its angular speed after this 7-s interval?
What is 0.78 rad/s?
400
This is a type of quantity characterized by magnitude only.
What is a scalar?
500
The kinetic energy of a 0.135-kg baseball thrown at 40.0 m/s (90.0 mph).
What is 108 J?
500
The sum of potential and kinetic energies of a ball with initially zero for both is what after being dropped to the bottom of a 10 m well? The ball's mass is 2.00-kg
What is zero?
500
A 75-kg swimmer dives horizontally off a 500-kg raft. If the diver’s speed immediately after leaving the raft is 4 m/s, what is the corresponding raft speed?
What is 0.6 m/s?
500
The Earth is 93 million miles (mi) from the Sun and its period of revolution is 1 year = 3.15 x 10^7 s. What is the acceleration of the Earth in its orbit about the Sun?
What is 3.7 x 10^-6 mi/s?
500
A student adds two vectors with magnitudes of 200 and 40. Which one of the following is the only possible choice for the magnitude of the resultant? a. 100 b. 200 c. 260 d. 40
What is B?