What does it mean when work is positive?
a. velocity is greater than kinetic energy.
b....
Physics, 27.09.2019 10:30 paulawells11
What does it mean when work is positive?
a. velocity is greater than kinetic energy.
b. kinetic energy is greater than velocity.
c. the environment did work on an object
d. an object did work on the environment
Answers: 1
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What is the momentum of a 2 kg object moving at 15 meters per second
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Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free โ body force diagram showing the forces acting on the block. (b) write down all relevant newtonโs equations for a given situation.
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Astone is dropped from the upper observation deck of a tower, 250 m above the ground. (assume g = 9.8 m/s2.) (a) find the distance (in meters) of the stone above ground level at time t. h(t) = (b) how long does it take the stone to reach the ground? (round your answer to two decimal places.) s (c) with what velocity does it strike the ground? (round your answer to one decimal place.) m/s (d) if the stone is thrown downward with a speed of 2 m/s, how long does it take to reach the ground? (round your answer to two decimal places.) s
Answers: 3
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