# physics quiz 2

### 24 terms by Lizbethgrc28

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### 25) The acceleration of gravity on the Moon is only one-sixth of that on Earth. If you hit a baseball on the Moon with the same effort (and at the speed and angle) that you would on Earth, the ball would lan

C) 6 times as far

### 24) A pilot drops a bomb from a plane flying horizontally at a constant speed. Neglecting air resistance, when the bomb hits the ground the horizontal location of the plane wil

B) be over the bomb

C) increase

A) 100

### 21) A bullet is fired horizontally, and at the same instant a second bullet is dropped from the same height. Ignore air resistance. Compare the times of fall of the two bullets

C) They hit at the same time

B) the stone

### 19) When a football in a field goal attempt reaches its maximum height, how does its speed compare to its initial speed

B) It is less than its initial speed

B) 8.0 m/s

### 19)You are throwing a ball for the second time. If the ball leaves your hand with twice the velocity it had on your first throw, its horizontal range R (compared to your first serve) would be

D) four times as much

D) 30e and 6e

C) 45

### 14) If the acceleration of an object is always directed perpendicular to its velocity

C) the object is turning

### 13) If the acceleration vector of an object is directed anti-parallel to the velocity vector

C) the object is slowing down

### 12) A soccer ball is kicked with a velocity of 25 m/s at an angle of 45e above the horizontal. What is the vertical component of its acceleration as it travels along its trajectory

A) 9.80 m/s2 downward

A) is zero

A) 10 m/s

### 9) Ignoring air resistance, the horizontal component of a projectile's velocity

B) remains constant

### 7) Three forces, each having a magnitude of 30 N, pull on an object in directions that are 120e apart from each other. Make a statement concerning the resultant force

A) The resultant force is zero

C) 40

### 5) Two displacement vectors have magnitudes of 5.0 m and 7.0 m, respectively. When these two vectors are added, the magnitude of the sum

B) could be as small as 2.0 m, or as large as 12 m

D) 180

### 3) Which of the following is an accurate statement

A) A vector cannot have zero magnitude if one of its components is not zero

### 2) Which of the following operations will not change a vector

A) Translate it parallel to itself

B) velocity

Example: