PHYS 1010 TEST 2 with verified detailed answers ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
It is correct to say that impulse is equal to
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A) momentum ||\\|//||
B) the change in momentum||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
C) the force multiplied bu the distance the force acts
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D) all of these ||\\|//|| ||\\|//|| ||\\|//||
E) none of these - correct answer✔✔B) the change in momentum
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A rifle recoils from firing a bullet; the speed of the rifles recoil is small because the
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A) force against the rifle is smaller than against the bullet.
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B) momentum is mainly concentrated in the bullet
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C) rifle has much more mass than the bullet
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D) momentum of the rifle is smaller - correct answer✔✔C) rifle has much more mass than
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the bullet
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Two objects, A and B, have the same size and shape, but A is twice as heavy as B. When
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they are dropped simultaneously from a tower, they reach the ground at the same time but
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A has greater||\\|//|| ||\\|//||
A) speed ||\\|//||
B) momentum is mainly concentrated in the bullet
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C) momentum ||\\|//||
D) all of these ||\\|//|| ||\\|//|| ||\\|//||
E) none of these - correct answer✔✔C) momentum
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, A fan attached to an ice sailcraft stalled on a windless day blows air into the sail that
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bounces backward upon impact. The boat can ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
A) then move in the direction of the impact force.
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B) not move by this wind impact
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C) then move, but in the opposite direction of the wind impact force - correct
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answer✔✔A) then move in the direction of the wind impact force. ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
You're driving down the highway and a bug spatters into your windshield. Which
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undergoes the greater change in momentum? ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
A) the bug ||\\|//|| ||\\|//||
B) your car ||\\|//|| ||\\|//||
C) bot the same - correct answer✔✔C) both the same
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if you push for an hour against a stationary wall, you do not work
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A) on the wall ||\\|//|| ||\\|//|| ||\\|//||
B) at all ||\\|//|| ||\\|//||
C) both of these ||\\|//|| ||\\|//|| ||\\|//||
D) none of these - correct answer✔✔A) on the wall
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If you do work on an object in half the usual time, your power output is
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A) half the usual power output
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B) the usual power output
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C) twice the usual power output - correct answer✔✔C) twice the usual power output.
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When an object is raised above the ground it gains a certain amount of potentioal energy.
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If the same object is raised twice as high it gains
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A) four times as much potential energy
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It is correct to say that impulse is equal to
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
A) momentum ||\\|//||
B) the change in momentum||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
C) the force multiplied bu the distance the force acts
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D) all of these ||\\|//|| ||\\|//|| ||\\|//||
E) none of these - correct answer✔✔B) the change in momentum
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
A rifle recoils from firing a bullet; the speed of the rifles recoil is small because the
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A) force against the rifle is smaller than against the bullet.
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B) momentum is mainly concentrated in the bullet
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C) rifle has much more mass than the bullet
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D) momentum of the rifle is smaller - correct answer✔✔C) rifle has much more mass than
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the bullet
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Two objects, A and B, have the same size and shape, but A is twice as heavy as B. When
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they are dropped simultaneously from a tower, they reach the ground at the same time but
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A has greater||\\|//|| ||\\|//||
A) speed ||\\|//||
B) momentum is mainly concentrated in the bullet
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C) momentum ||\\|//||
D) all of these ||\\|//|| ||\\|//|| ||\\|//||
E) none of these - correct answer✔✔C) momentum
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, A fan attached to an ice sailcraft stalled on a windless day blows air into the sail that
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bounces backward upon impact. The boat can ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
A) then move in the direction of the impact force.
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B) not move by this wind impact
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C) then move, but in the opposite direction of the wind impact force - correct
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answer✔✔A) then move in the direction of the wind impact force. ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
You're driving down the highway and a bug spatters into your windshield. Which
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undergoes the greater change in momentum? ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
A) the bug ||\\|//|| ||\\|//||
B) your car ||\\|//|| ||\\|//||
C) bot the same - correct answer✔✔C) both the same
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if you push for an hour against a stationary wall, you do not work
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A) on the wall ||\\|//|| ||\\|//|| ||\\|//||
B) at all ||\\|//|| ||\\|//||
C) both of these ||\\|//|| ||\\|//|| ||\\|//||
D) none of these - correct answer✔✔A) on the wall
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If you do work on an object in half the usual time, your power output is
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A) half the usual power output
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B) the usual power output
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C) twice the usual power output - correct answer✔✔C) twice the usual power output.
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When an object is raised above the ground it gains a certain amount of potentioal energy.
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If the same object is raised twice as high it gains
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A) four times as much potential energy
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