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
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