Which of the following objects are in free fall? a ball that was thrown at an angle below horizontal a ball that was thrown horizontally a ball that was thrown at an angle horizontal a ball that was dropped all of the above

Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter6: Motion In Two Dimensions
Section: Chapter Questions
Problem 46A
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Which of the following objects are in free fall?
a ball that was thrown at an angle below horizontal
a ball that was thrown horizontally
a ball that was thrown at an angle horizontal
O a ball that was dropped
all of the above
Transcribed Image Text:Which of the following objects are in free fall? a ball that was thrown at an angle below horizontal a ball that was thrown horizontally a ball that was thrown at an angle horizontal O a ball that was dropped all of the above
A flatbed truck is carrying a crate along a level road. The coefficient of static friction
between the load and the bed is 0.40. The truck accelerates forward and the crate
stays in its place on the truck bed. In what direction is the force that the bed exerts
on the crate?
backward
toward the centre of the road
forward
There is not enough information to answer this question.
There is no frictional force because the crate does not move with respect to the
bed
Transcribed Image Text:A flatbed truck is carrying a crate along a level road. The coefficient of static friction between the load and the bed is 0.40. The truck accelerates forward and the crate stays in its place on the truck bed. In what direction is the force that the bed exerts on the crate? backward toward the centre of the road forward There is not enough information to answer this question. There is no frictional force because the crate does not move with respect to the bed
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