**MORE REGENTS PRACTICE QUESTIONS**

1. How far will a freely falling object, initially at rest, fall in
2.4 s ?

6.0 m
12 m 23 m
28
m

2. An object originally at rest is uniformly accelerated along a
straight-line path to a speed of 8.0 m/s in 2.00 s. The acceleration of the object is

0.25 m/s^{2}
10 m/s^{2} 16 m/s^{2}
4.0
m/s^{2}

3. To change the velocity of an object, there must be

an increase in its
speed a decrease in its speed
a
change in either its speed or direction

Questions 4 through 6 : A ball is kicked at an angle of 30^{o} from the horizontal. The ball has an initial velocity of 5.0 m/s. [Neglect friction.]

4.What is the magnitude of the horizontal component of the ball's initial velocity ?

2.5 m/s
4.3 m/s
5.0 m/s
8.7 m/s

5.As the ball rises, the vertical component of its velocity

decreases
increases
remains the same

6.If the angle between the horizontal and the direction of the 5.0 m/s velocity decreases from 30^{o} to 20^{o}, the horizontal distance the ball travels will

decrease
increase
remain the same

Base your answers to questions 7 through 11 on the diagram below which shows the trajectory of a projectile launched on the Earth's surface.

7. What is the
initial vertical velocity of the projectile ?

35 m/s 20 m/s 40 m/s 30 m/s

8. What is the
initial horizontal velocity of the projectile ?

35 m/s 20 m/s 40 m/s 30 m/s

9. If the angle
were decreased to 50^{o}, the horizontal distance traveled by the projectile would

decrease increase remain the same

10. What is the horizontal
velocity of the projectile at point P ?

35 m/s 20 m/s 40 m/s 30 m/s

11. What is the vertical
velocity of the projectile at point P ?

35 m/s 20 m/s 40 m/s 0 m/s

12. An object is accelerated uniformly from rest to a speed of 25 m/s
in 10.0 s. The acceleration of the object is

1.0 m/s^{2}
2.0
m/s^{2} 1.5 m/s^{2} 2.5 m/s^{2}

13. Starting from rest, how far can a 2.00 kg mass fall freely in 1.00
s ?

4.90 m
2.00 m 9.80 m 19.6 m

14. As the time required to accelerate an object from rest to a speed
of 4 m/s decreases, the acceleration of the object

decreases
increases
remains
the same

15. As an object falls freely near the earth, its acceleration

decreases
increases
remains
the same

16. Which of the following is a vector quantity ?

distance
speed
acceleration
mass

17. A woman jogs 300 m north, then 400 m east. What is the
displacement of the woman?

500 m
500
m northeast 700 m
700 m northeast

Base your answers to questions 18 through 23 on the speed-time graph below representing the motion of a cart.

18. The cart travels the shortest distance in interval

0-5 s 5-8 s 8-11 s 11-16 s

19. The cart’s average speed is greatest during interval

0-5 s 5-8 s 8-11 s 11-16 s

20. The cart travels the greatest distance during interval

0-5 s 5-8 s 8-11 s 11-16 s

21. The magnitude of the cart’s acceleration is greatest during interval

0-5 s 5-8 s 8-11 s 11-16 s

22. During how many intervals is the cart’s acceleration equal to zero ?

1 2 3 4

23. What is the
distance traveled by the object during the time interval 8 to 11 seconds ?

30 m 60
m 90 m 180 m

24. What is the average speed of a car that travels 1200 m in 20. s ?

20 m/s
60
m/s 120
m/s 0.017 m/s

25. A cart initially traveling at 10. m/s north accelerates uniformly
at 3.0 m/s^{2} to the north for 4.0 s. The displacement

of the cart during the 4.0 s from its initial position is

40. m north
64
m north 88 m
north 180 m north

26. An object initially traveling at 20. m/s south decelerates
uniformly at 6.0 m/s^{2} and is displaced 25 m. What is the

final velocity of the object ?

26 m/s north
26 m/s
south 10 m/s north 10 m/s south

27. Which is constant for a freely falling object ?

acceleration
velocity speed displacement

28. In an experiment that measures how fast a student reacts, a meter
stick dropped from rest falls 0.20 m before the

student catches it. The reaction time of the student is approximately

0.10 s
0.20
s 0.30 s
0.40 s

29. The width of your little finger is closest to

1 m
0.1 m
0.01 m
0.001 m

30. Which of the following statements is true ?

The velocity of a projectile at its maximum height is zero.

The acceleration of a projectile at its maximum height is zero.

The horizontal velocity of a projectile at its maximum height is zero.

The vertical velocity of a projectile at its maximum height is zero.

31. If an object is traveling east with decreasing speed, the direction of the object's acceleration is

north
south
east
west

32. A roller coaster, traveling with an initial speed of 15 m/s, decelerates uniformly at -7.0 m/s^{2} to a full stop.

Approximately how far does the roller coaster travel during its deceleration?

1.0 m
2.0 m 16 m
32 m