Q1) The book on the table is at rest.
1)true
2) false
3) maybe
Q2)Does the displacement of an object depend on the specific location of the origin of thecoordinate system?
1)Yes
2) No
Q3)An object goes from one point in space to another. After it arrives at its destination, the magnitude of its displacement is:
1) either greater than or equal to
2) always greater than
3) always equal to
4) either smaller than or equal to
5) always smaller than
the distance it traveled.
Q4) In how many of the following cases is the car’s speed increasing? (a) A car covers longer and longer distances in equal times. (b) A car takes longer and longer to cover equal distances. (c) A car covers equal distances in shorter and shorter times. (d) A car covers shorter and shorter distances in equal times.
1) 12) 23) 34) 45) none of them
Q5) A car travels in a straight line covering a total distance of 90.0 miles in 60.0 minutes. Which of the following must be true?
1) The velocity of the car is constant.
2) The first 45 miles must have been covered in 30.0 minutes.
3) The speed of the car must be 90.0 mi/hr for the entire trip.
4) The average velocity of the car is 90.0 mi/hr in the direction of motion.
5) none of the above
Q6)The two measurements necessary for calculating average speed are
1)acceleration and time.
2)velocity and time.
3)distance and time.
4)distance and acceleration.
5)velocity and distance.
Q7) How many different controls in a car are usually used to produce acceleration? (Ignore the clutch)
1) 1
2) 2
3) 3
4) 4
5) 5
Q8) Which one of the following situations is not possible?
1) A body has zero velocity and non-zero acceleration.
2) A body travels with a northward velocity and a northward acceleration.
3) A body travels with a northward velocity and a southward acceleration.
4) A body travels with a constant velocity and a time-varying acceleration.
5) A body travels with a constant acceleration and a time-varying velocity.
Q9)A cart on a roller-coaster rolls down the track shown below. As the cart rolls beyond the point shown, what happens to its speed
and acceleration in the direction of motion?
1) Both decrease.
2) The speed decreases, but the acceleration increases.
3) Both remain constant.
4) The speed increases, but acceleration decreases.
5) Both increase.
Q10) Can an object be moving when its acceleration is zero?
1) yes
2) no
Q11) How many of the following statements are impossible? (a) An object that has zero velocity and a non-zero acceleration. (b) An object that travels with a constant velocity and a varying acceleration. (c) An object that travels with a constant acceleration and a varying velocity.
1) 1 2) 2 3) 3 4) none
Q12)If an object moves with constant acceleration, its velocity must
1)be constant also.
2) change by the same amount each second.
3) change by varying amounts depending on its speed.
4)always decrease.
Q13) In which time periods is the Chihuahua’s speed increasing?
1)A, B, and H
2)C, E, and G
3)D and F
4) B, C, and D
5)not enough information given
Q14)A particle moves on the x axis. When its acceleration is positive and increasing:
1) its velocity must be positive
2) its velocity must be negative
3) it must be slowing down
4) it must be speeding up
5) none of the above must be true
Q15) In how many of the following situations does the car have a westward acceleration?
(a)The car travels westward at constant speed.
(b)The car travels eastward and speeds up.
(c)The car travels westward and slows down.
(d)The car travels eastward and slows down.
(e)The car starts from rest and moves toward the east.
1) 1 2) 2 3) 3 4) 4 5) none
Q16) An object moving along a straight line is decelerating. Which one of the following statements concerning the object’s acceleration is necessarily true?
1) The value of the acceleration is positive.
2) The direction of the acceleration is in the same direction as the displacement.
3) An object that is decelerating has a negative acceleration.
4) The direction of the acceleration is in the direction opposite to that of the velocity.
5) The acceleration changes as the object moves along the line.
Q17)A car, starting from rest, accelerates in a straight line at a constant rate of 2.5 m/s2. How far will the car travel in 12 seconds?
1)4.8 m 2) 15 m 3) 30 m
4) 120 m 5) 180 m
Q18)A racecar has a speed of 80 m/s when the driver releases a drag parachute. If the parachute causes a deceleration of –4.0 m/s2, how far will the car travel before it stops?
1) 20 m 2) 40 m 3) 400 m
4) 800 m 5) 1600 m
Q19)A train passes through a town with a constant speed of 16 m/s. After leaving the town, the train accelerates at 0.33 m/s2until it reaches a speed of 35 m/s. How far did the train travel while it was accelerating?
1) 0.029 km
2) 0.53 km
3) 1.5 km
4) 2.3 km
5) 3.0 km
Q20) Two objects, A and B, are accelerated from rest with the same constant acceleration. However, object A is accelerated for twice as much time as object B. Which one of the following statements is true?
1) Object A will travel twice as far as object B.
2) Object A will travel four times as far as object B.
3) Object A will travel eight times as far as object B.
4) Object A will be moving four times faster than object B.
5) Object A will be moving eight times faster than object B.
Q21) For a freely falling object, how many of the following statements are true? (a) the distance fallen during each second keeps increasing; (b) the speed keeps increasing;
(c) the change in speed during each second keeps increasing; (d) the acceleration keeps increasing.
1) 12) 23) 34) 45) none
Q22)If you drop an object in the absence of air resistance, it accelerates downward at 9.80 m/s2. If instead you throw it downward, its downward acceleration after release is
1) 11) less than 9.80 m/s2.
2) 9.80 m/s2.
3) more than 9.80 m/s2.
Q23) A person standing at the edge of a cliff throws one ball straight up and another ballstraight down at the same initial speed. Neglecting air resistance, the ball to hit the ground below the cliff with the greater speed is the one initially thrown
1) upward.
2) downward.
3) neither—they both hit at the same speed.
Q24)A ball is thrown vertically upward. Which of the following quantities is zero when the ball has reached its highest point: (a) the speed of the ball, (b) the velocity of the ball, (c) the acceleration of the ball.
1) a only2) b only3) a and b
4) a and c5) a, b, and c
Q25) A ball is thrown upwards in the absence of air resistance. The acceleration of the ball at the top of the path (where its speed is zero) is
1) zero
2) between zero and 10 m/s2
3) 10 m/s2
4) greater than 10 m/s2
Q26)You are throwing a ball straight up in the air. At the highest point, the ball’s
1) velocity and acceleration are zero.
2) velocity is nonzero but its acceleration is zero.
3) velocity is zero but its acceleration is nonzero
4) velocity and acceleration are both nonzero.
Q27)A rock is thrown vertically upward from the surface of the earth. The rock rises to some maximum height and falls back toward the surface of the earth. Which one of the following statements concerning this situation is true if air resistance is neglected?
1) As the ball rises, its acceleration vector points upward.
2) The ball is a freely falling body for the duration of its flight.
3) The acceleration of the ball is zero when the ball is at its highest point.
4) The speed of the ball is negative while the ball falls back toward the earth.
5) The velocity and acceleration of the ball always point in the same direction.
Q28)Two stones are dropped into a bottomless pit, the second stone is dropped 2 seconds after the first stone. Assume no air resistance. As both stones fall, the difference in their heights (y-positions).
1) increases
2) decreases
3) remains constant
Q29)Two stones are dropped into a bottomless pit, the second stone is dropped 2 seconds after the first stone. Assume no air resistance.As both stones fall, the difference in their velocities.
1) increases
2) decreases
3) remains constant
Q30)Janet throws a tennis ball vertically upward. The ball returns to the point of release after 3.5 s. How fast was the ball thrown upwards?
1) 0 m/s
2) 14 m/s
3) 17 m/s
4) 21 m/s
5) 34 m/s
Q31)A ball is thrown upwards. Neglecting air resistance, what initial upward speed does the ball need to remain in the air for a total time of 10 seconds?
1)about 50 m/s
2)about 60 m/s
3)about 80 m/s
4)about 100 m/s
5)about 110 m/s
Q32)A stone is released from a balloon that is descending at a constant speed of 10 m/s. Neglecting air resistance, after 20.0 s the speed of the stone is:
1)2160 m/s
2) 1760 m/s
3) 206 m/s
4) 196 m/s
5) 186 m/s
Q33)An object dropped from the window of a tall building hits the ground in 12.0 s. What is the height of the window above the ground?
1)29.4 m
2) 58.8 m
3) 118 m
4) 353 m
5) 706 m
Q34)A person initially at point P in the illustration stays there a moment and then moves along the axis to Q and stays there a moment. She then runs quickly to R, stays there a moment, and then strolls slowly back to P.Which of the position vs. time graphs below correctlyrepresents this motion?
Q35)Which of the following position versus time graphs represents the motion of an objectwhose speed is increasing?
Q36)A train car moves along a long straight track. The graph shows the position as a function of time for this train. The graph shows that the train:
1) speeds up all the time.
2) slows down all the time.
3) speeds up part of the time and slows down part of the time.
4) moves at a constant velocity.
Q37)The graph shows position as a function of time for two trains running on parallel tracks.Which is true:
1) At time tB, both trains have the samevelocity.
2) Both trains speed up all the time.
3) Both trains have the same velocity atsome time before tB.
4) Somewhere on the graph, both trainshave the same acceleration.
Q38)Which of the following statements are true?
1) While an object moves at constant speed, its acceleration must be zero.
2)For a ball to roll up a hill and then back down, its acceleration must change.
3)When an object’s velocity versus time graph crosses the time axis, its acceleration must be zero.
4) Two of the above
5) None of the above
Q39) A block slides without friction down a ramp as shown.
As the block slides down the speed ______and the magnitude of the acceleration ______.
1)increasesincreases
2)increases decreases
3)decreases increases
4)increases decreases