Question

Notify Me Bookmark

An Australian emu is running due north in a straight line at a speed of 13.0 m/s and slows down to a speed of 9.20 m/s in 3.30 s. (a) What is the magnitude and direction of the bird's acceleration? (b) Assuming that the acceleration remains the same, what is the bird's velocity after an additional 2.30 s has elapsed? (a) Number Units (b) Number Units

An Australian emu is running due north in a straight line at a speed of 13.0 m/s and slows down to a speed of 9.20 m/s in 3.30 s. (a) What is the magnitude and direction of the bird's acceleration? (b) Assuming that the acceleration remains the same, what is the bird's velocity after an additional 2.30 s has elapsed? (a) Number Units (b) Number Units

Image text
An Australian emu is running due north in a straight line at a speed of 13.0 m / s and slows down to a speed of 9.20 m / s in 3.30 s. (a) What is the magnitude and direction of the bird's acceleration? (b) Assuming that the acceleration remains the same, what is the bird's velocity after an additional 2.30 s has elapsed? (a) Number i ◻ Units ◻ (b) Number i ◻ Units ◻

Detailed Answer

0 0

Please enter your email here. You will get email when this question is answered by our tutor.

Doubtrix Logo

Problem is not yet solved!

Click on Notify me to get email when question is answered.

Join Doubtrix with 7-days free trial

  • Icon Correct & Verified Answers
  • Icon No AI-Generated Answers
  • Icon Video Solution for Difficult Questions
  • Icon Work With Experts to Reach at Correct Answers
Notify me Login Sign Up

Similar/Related Questions

You are in a hot-air balloon that, relative to the ground, has a velocity of 5.22 m/s in a direction due east. You see a hawk moving directly away from the balloon in a direction due north. The speed of the hawk relative to you is 1.11 m/s. What are (a) the magnitude and (b) direction of the hawk's velocity relative to the ground? Express the directional angle relative to due east. (a) Number Units (b) Number Units
Solution
0 0

A 210-m-wide river flows due east at a uniform speed of 4.1 m/s. A boat with a speed of 7.1 m/s relative to the water leaves the south bank pointed in a direction 27∘ west of north. What is the (a) magnitude and (b) direction of the boat's velocity relative to the ground? Give the direction as the angle of the velocity from due north, positive if to the east and negative if to the west. (c) How long does it take for the boat to cross the river? (a) Number Units (b) Number Units (c) Number Units
Solution
0 0

Tyrannosaurus rex may have known from experience not to run particularly fast because of the danger of tripping, in which case its short forearms would have been no help in cushioning the fall. Suppose a T. Rex of mass 4300 kg trips while walking, toppling over, with its center of mass falling freely a distance of 1.4 m. Then its center of mass descends an additional 0.25 m due to compression of its body and the ground. (a) What is the approximate magnitude of the average vertical force on the dinosaur during its collision with the ground (during the descent of 0.25 m)? Now assume that the dinosaur is running at a speed of 19 m/s (fast) when it trips, falls to the ground, and then slides to a stop with a coefficient of kinetic friction of 0.58. Assume also that the average vertical force during the collision and sliding is that in (a). What, approximately, are (b) the magnitude of the average total force on the dinosaur from the ground and (c) the sliding distance? The force magnitudes of (a) and (b) strongly suggest that the collision would injure the torso of the dinosaur. The head, which would fall farther, would suffer even greater injury. (a) Number Units (b) Number Units (c) Number Units
Solution
0 0