Solve graphically 6.) The same rock is dropped from a cliffand falls 85 m before hitting theground.a. How fast did the rock hit theground? (41.2 m/s)b. How long did it take the rockto fall? (4.12 s)c. What was the acceleration at3 s? (-10 m/s?)

Given data: Height of the cliff = 85 m Initial velocity (V0) = 0 m/s

Answered: The same rock is dropped from a cliff…

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter1: The Study Of Motion

Section: Chapter Questions

Problem 23P: . A rocket accelerates from rest at a rate of 64 m/s2. (a) What is its speed after it accelerates...

See similar textbooks

Similar questions

A person lakes a trip, driving with a constant speed of 89.5 km/h, except, for a 22.0-min rest stop. If the persons average speed is 77.8 km/h, (a) how much time is spent on the trip and (b) how far does the person travel?
. A rocket accelerates from rest at a rate of 64 m/s2. (a) What is its speed after it accelerates for 40 s? (b) How long does it take for the rocket to reach a speed of 7,500 m/s?
A graph of v(t) is shown for a world-class track sprinter in a 100-m race. (See Figure 2.67). (a) What is y1his average velocity for the first 4 s? (b) What is his instantaneous velocity at t=5 s? (c) What is his average acceleration between 0 and 4 s? (d) What is his time for the race?
A person lakes a trip, driving with a constant speed of 89.5 km/h, except, for a 22.0-min rest stop. If the persons average speed is 77.8 km/h, (a) how much time is spent on the trip and (b) how far does the person travel?
You throw a ball straight up with an initial velocity of 15.0 m/s. It passes a tree branch on the way up at a height of 7.00 m. How much additional time will pass before the ball passes the tree branch on the way back down?
At a track meet, a runner runs the 100-m dash in 12 s. What was the runners average speed?
What is the speed of the bird in Exercise 2.4?
. A drag-racing car goes from 0 to 300 mph in 5 s. What is its average acceleration in g’s?
(a) Sketch a graph of acceleration versus time corresponding to the graph of velocity versus time given in Figure 2.57. (b) Identify the time or titles (ta, tb, tc, etc.) at which the acceleration is greatest, (c) At which times is it zero? (d) At which times is it negative?
A motorist drives for 35.0 minutes at 85.0 km/h and then stops for 15.0 minutes. He then continues north, traveling 130. Km in 2.00 h. (a) What is his total displacement? (b) What is his average velocity?
. A rock is dropped off the side of a bridge and hits the water below 2 s later. (a) What was the rock's velocity when it hit the water? (b) What was the rock's average velocity as it fell? (c) What is the height of the bridge above the water?
A well-thrown ball is caught in a well-padded mitt. If the deceleration of the ball is 2.10104 m/s2, and 1.85 ms (1ms=103s) elapses from the time the ball first touches the mitt until it stops, what was the initial velocity of the ball?

SEE MORE QUESTIONS

Recommended textbooks for you

Inquiry into Physics

Physics

ISBN:

9781337515863

Author:

Ostdiek

Publisher:

Cengage

College Physics

Physics

ISBN:

9781938168000

Author:

Paul Peter Urone, Roger Hinrichs

Publisher:

OpenStax College

Physics for Scientists and Engineers: Foundations…

Physics

ISBN:

9781133939146

Author:

Katz, Debora M.

Publisher:

Cengage Learning

Inquiry into Physics

Physics

ISBN:

9781337515863

Author:

Ostdiek

Publisher:

Cengage

College Physics

Physics

ISBN:

9781938168000

Author:

Paul Peter Urone, Roger Hinrichs

Publisher:

OpenStax College

Physics for Scientists and Engineers: Foundations…

Physics

ISBN:

9781133939146

Author:

Katz, Debora M.

Publisher:

Cengage Learning

University Physics Volume 1

Physics

ISBN:

9781938168277

Author:

William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:

OpenStax - Rice University

An Introduction to Physical Science

Physics

ISBN:

9781305079137

Author:

James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Publisher:

Cengage Learning

College Physics

Physics

ISBN:

9781285737027

Author:

Raymond A. Serway, Chris Vuille

Publisher:

Cengage Learning

SEE MORE TEXTBOOKS

The same rock is dropped from a cliff and falls 85 m before hitting the ground. a. How fast did the rock hit the ground? (41.2 m/s) b. How long did it take the rock to fall? (4.12 s) c. What was the acceleration at 3 s? (-10 m/s?)