44. A dynamite blast at a quarry launches a chunk of rock straight up- ward, and 2.0 s later it is rising at a speed of 15 m/s. Assuming air re- sistance has no effect on the rock, calculate its speed (a) at launch and (b) 5.0 s after launch.

44. A dynamite blast at a quarry launches a chunk of rock straight up- ward, and 2.0 s later it is rising at a speed of 15 m/s. Assuming air re- sistance has no effect on the rock, calculate its speed (a) at launch and (b) 5.0 s after launch.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter3: Two-dimensional Kinematics

Section: Chapter Questions

Problem 59PE: (a) In what direction would the ship in Exercise 3.57 have to travel in order to have a velocity...

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Question

44. A dynamite blast at a quarry launches a chunk of rock straight up-
ward, and 2.0 s later it is rising at a speed of 15 m/s. Assuming air re-
sistance has no effect on the rock, calculate its speed (a) at launch and
(b) 5.0 s after launch.

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