Q/A CAR STARTED ACCELERATING WHILE MOVING AT A RATE OF 16.7 M/S AND ACCELERATING AT 1.5 M/SQ. IF, WHILE ACCELERATING, THE CAR TRAVELS A DISTANCE OF 70 METRES, THEN WHAT IS IT: 1. INITIAL VELOCITY 2. FINAL SPEED 3. THE TIME REQUIRED TO COVER THE MENTIONED DISTANCE 4. THE AVERAGE SPEED OF THE CAR, GIVEN THAT ITS ACCELERATION WAS UNIFORM

Q/A CAR STARTED ACCELERATING WHILE MOVING AT A RATE OF 16.7 M/S AND ACCELERATING AT 1.5 M/SQ. IF, WHILE ACCELERATING, THE CAR TRAVELS A DISTANCE OF 70 METRES, THEN WHAT IS IT: 1. INITIAL VELOCITY 2. FINAL SPEED 3. THE TIME REQUIRED TO COVER THE MENTIONED DISTANCE 4. THE AVERAGE SPEED OF THE CAR, GIVEN THAT ITS ACCELERATION WAS UNIFORM

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter3: Motion Along A Straight Line

Section: Chapter Questions

Problem 61P: A woodpecker’s brain is specially protected from large accelerations by tendon-like attachments...

See similar textbooks

Similar questions

A speedboat moving at 30.0 m/s approaches a no-wake buoy marker 100 m ahead. The pilot slows the boat with a constant acceleration of -3.50 m/s2 by reducing the throttle, (a) How long does it take the boat to reach the buoy? (b) What is the velocity of the boat when it reaches the buoy?
Plus and minus signs are used in one-dimensional motion to indicate direction. What is the sign of an acceleration that reduces the magnitude of a negative velocity? Of a positive velocity?
. Initially staionary, a train has a constant acceleration of 0.5 m/s2. (a) What is its speed after 15 s? (b) What is the total time required for the train to reach a speed of 25 m/s?
An object that is thrown straight up falls back to Earth. This is one-dimensional motion. (a) When is its velocity zero? (b) Does its velocity change direction? (c) Does the acceleration clue to gravity have the same sign on the way up as on the way clown?
Average and Instantaneous Acceleration A cheetah can accelerate from rest to a speed of 30.0 m/s in 7.00 s. What is its acceleration?
Give an example in which velocity is zero yet acceleration is not.
A woodpecker’s brain is specially protected from large accelerations by tendon-like attachments inside the skull. While pecking on a tree, the woodpecker’s head comes to a stop from an initial velocity of 0.600 m/s in a distance of only 2.00 mm. (a) Find the acceleration in meters per second squared and in multiples of g , where g=9.80m/s2 . (b) Calculate the stopping time. (c) The tendons cradling the brain stretch, making its stopping distance 4.50 mm (greater then the head and, hence, less acceleration of the brain). What is the brain’s acceleration, expressed in multiples of g ?
A race car traveling northward on a straight, level track at a constant speed travels 0.750 km in 20.0 s. The return trip over the same track is made in 25.0 s. (a) What is the average velocity of the car in m/s for the first leg of the run? (b) What is the average velocity for the total trip?
How are instantaneous velocity and instantaneous speed related to one another? How do they differ?
What is the speed of the bird in Exercise 2.4?
A motorcycle that is slowing down uniformly covers 2.0 successive km in 80 s and 120 s, respectively. Calculate (a) the acceleration of the motorcycle and (b) its velocity at the beginning and end of the 2-km trip.
How many times higher could an astronaut jump on the Moon than on Earth if his takeoff speed is the same in both locations (gravitational acceleration on the Moon is about 1/6 of g on Earth)?