Consider a situation where a constant force of 25 N acts on an object having a mass of 2 kg for 3 seconds.What is the work done by the force?
a. 150 J
b. 50 J
c. 75 J
d. undeterminednot enough information given
e. none of the above
[Ques. 2] Consider a situation where a constant force of 25 N acts on an object having a mass of 2 kg for 3 seconds.What is the impulse provided by the force?
a. 150 N-s
b. 50 N-s
c. 75 N-s
d. undeterminednot enough information given
e. none of the above
[Ques. 3] Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m.You drop the box. As it falls to its original level, its kinetic energy is
a. 0 b. 4 J.
c. 100 J. d. none of the above.
[Ques. 4] Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m.The increase of potential energy of the box is
a. 0 b. 4 J.
c. 100 J. d. none of the above.
[Ques. 5] Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m.The work you do is
a. 0 b. 4 J.
c. 100 J. d. none of the above.
[Ques. 6] You carry a 20-N box 5 m horizontally across a room. The work you do is
a. 0 b. 4 J.
c. 100 J. d. none of the above.
[Ques. 7] Consider a situation where you exert a force F on a crate of mass m, moving it at a speed v a distance d across a floor in a time interval t.The quantity mv is
a. the kinetic energy of the crate.
b. the potential energy of the crate.
c. the linear momentum of the crate.
d. the work you do on the crate.
e. the power you supply to the crate.
[Ques. 8] Consider a situation where you exert a force F on a crate of mass m, moving it at a speed v a distance d across a floor in a time interval t.The quantity Fd/t is
a. the kinetic energy of the crate.
b. the potential energy of the crate.
c. the linear momentum of the crate.
d. the work you do on the crate.
e. the power you supply to the crate.
[Ques. 9] Consider a situation where you exert a force F on a crate of mass m, moving it at a speed v a distance d across a floor in a time interval t.The quantity 1/2 mv2 is
a. the kinetic energy of the crate.
b. the potential energy of the crate.
c. the linear momentum of the crate.
d. the work you do on the crate.
e. the power you supply to the crate.
[Ques. 10] Consider a situation where you exert a force F on a crate of mass m, moving it at a speed v a distance d across a floor in a time interval t.The quantity Fd is
a. the kinetic energy of the crate.
b. the potential energy of the crate.
c. the linear momentum of the crate.
d. the work you do on the crate.
e. the power you supply to the crate.
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