7 Questions
| Total Attempts: 173

Test Prep for Test 2 Physics Honors at Pine Crest School.

Questions and Answers

- 1.Suppose a 60-kg boy and a 41-kg girl use a massless rope in a tug-of-war on an icy, resistance-free surface. If the acceleration of the girl toward the boy is 3.0 m/s
^{2}, find the magnitude of the acceleration of the boy toward the girl.- A.
2.05 m/s2

- B.
2 m/s2

- C.
2.1 m/s2

- 2.As a baseball is being caught, its speed goes from 29.0 m/s to 0.0 m/s in about 0.0050 s. The mass of the baseball is 0.130 kg. (a) What is the baseball's acceleration?
- A.
15800 m/s2

- B.
16000 m/s2

- C.
15800.0 m/s2

- D.
-16000 m/s2

- 3.As a baseball is being caught, its speed goes from 29.0 m/s to 0.0 m/s in about 0.0050 s. The mass of the baseball is 0.130 kg. (b) What are the magnitude and direction of the force acting on it? *Pick 2 answers*
- A.
754 N

- B.
750 N

- C.
Same direction as velocity of the ball

- D.
Opposite in direction to velocity of the ball

- 4.As a baseball is being caught, its speed goes from 29.0 m/s to 0.0 m/s in about 0.0050 s. The mass of the baseball is 0.130 kg. (c) What are the magnitude and direction of the force acting on the player who caught it? *Pick 2 answers*
- A.
754 N

- B.
750 N

- C.
Same direction as velocity of the ball

- D.
Opposite in direction to the velocity of the ball

- 5.A student stands on a bathroom scale in an elevator at rest on the 64
^{th}floor of a building. The scale reads 844 N. (a) As the elevator moves up, the scale reading increases to 930 N. Find the acceleration of the elevator.- A.
1 m/s2

- B.
0.999 m/s2

- C.
0.99 m/s2

- 6.
- A.
-0.720 m/s2

- B.
0.720 m/s2

- C.
-1 m/s2

- D.
1 m/s2

- 7.(c) Using your results from parts a and b, select which change in velocity, starting or stopping, takes the longer time. Think of an explanation.
- A.
Stopping

- B.
Starting

- C.
Neither