Physics of Everyday Phenomena 9Th edition By W Thomas – Test Bank

Physics of Everyday Phenomena 9Th edition By W Thomas – Test Bank

The Physics of Everyday Phenomena, 9e (Griffith)

Chapter 3   Falling Objects and Projectile Motion

1) Neglecting friction, if a Cadillac and Volkswagen start rolling down a hill together, the heavier Cadillac will get to the bottom

A) before the Volkswagen.

B) after the Volkswagen.

C) at the same time as the Volkswagen.

Answer:  C

Difficulty: 1 Easy

Topic:  Acceleration Due to Gravity

Chapter:  03 Falling Objects and Projectile Motion

Type:  Conceptual

Accessibility:  Keyboard Navigation

2) A bullet is fired straight down from a hovering helicopter. If we neglect air friction, then the speed of the bullet

A) increases at 9.8 m/s each second.

B) is a constant.

C) is zero.

D) decreases at 9.8 ft/s during the flight.

Answer:  A

Difficulty: 1 Easy

Topic:  Tracking a Falling Object

Chapter:  03 Falling Objects and Projectile Motion

Type:  Conceptual

Accessibility:  Keyboard Navigation

3) Suppose you throw a ball vertically downward with a speed of 10 m/s. Neglecting air friction, what would be the speed of the ball one second later?

A) -9.8 m/s2

B) 9.8 m/s2

C) 15 m/s

D) 19.8 m/s

E) 24.8 m/s

Answer:  D

Difficulty: 1 Easy

Topic:  Tracking a Falling Object

Chapter:  03 Falling Objects and Projectile Motion

Type:  Numerical

Accessibility:  Keyboard Navigation

4) Which of the curves in the figure best shows the speed of an object falling from rest without air friction?

A) A

B) B

C) C

Answer:  B

Difficulty: 1 Easy

Topic:  Tracking a Falling Object

Chapter:  03 Falling Objects and Projectile Motion

Type:  Conceptual; Graphical

5) If you drop a ball in the absence of air resistance, it accelerates downward at 9.8 m/s2. If instead you throw the ball upward, then its downward acceleration after release is

A) less than 9.8 m/s2.

B) equal to 9.8 m/s2.

C) greater than 9.8 m/s2.

Answer:  B

Difficulty: 2 Medium

Topic:  Beyond Free Fall: Throwing a Ball Upward

Chapter:  03 Falling Objects and Projectile Motion

Type:  Conceptual

Accessibility:  Keyboard Navigation