0.1 Kinematics (Velocity and Acceleration)

Last updated 14 days ago

5 questions

Our textbook for this summer assignment will be OpenStax College Physics for AP Courses. 

Study sections 2.1 - 2.8.

Do Problems 12, 25,  and 45 in the "Problems and Exercises" section for Chapter 2. Put your answers below. If you format your answers correctly, formative will auto-grade when you submit the assignment. Include units on all answers, with a space before the unit. For instance, "27.4 km/s". Express large and small numbers in scientific notation: "4.5e13 kg".

12.
The speed of propagation of the action potential (an electrical signal) in a nerve cell depends (inversely) on the diameter of the axon (nerve fiber). If the nerve cell connecting the spinal cord to your feet is 1.1 m long, and the nerve impulse speed is 18 m/s, how long does it take for the nerve signal to travel this distance? Round your answer to three decimal places.

25.
At the end of a race, a runner decelerates from a velocity of 9.00 m/s at a rate of 2.00 m/s2. (a) How far does she travel in the next 5.00 s? Round your answer to one decimal place.

25.
At the end of a race, a runner decelerates from a velocity of 9.00 m/s at a rate of 2.00 m/s2. (b) What is her final velocity after 5.00 s? Round your answer to three decimal places.

45.
A dolphin in an aquatic show jumps straight up out of the water at a velocity of 13.0 m/s. (a) After how much time does he come to a stop before falling back down? Round to two decimal places.

45.
A dolphin in an aquatic show jumps straight up out of the water at a velocity of 13.0 m/s. (b) How high does his body rise above the water? Round to two decimal places.

0.1 Kinematics (Velocity and Acceleration)

25.At the end of a race, a runner decelerates from a velocity of 9.00 m/s at a rate of 2.00 m/s2. (a) How far does she travel in the next 5.00 s? Round your answer to one decimal place.

25.At the end of a race, a runner decelerates from a velocity of 9.00 m/s at a rate of 2.00 m/s2. (b) What is her final velocity after 5.00 s? Round your answer to three decimal places.

45.A dolphin in an aquatic show jumps straight up out of the water at a velocity of 13.0 m/s. (a) After how much time does he come to a stop before falling back down? Round to two decimal places.

45.A dolphin in an aquatic show jumps straight up out of the water at a velocity of 13.0 m/s. (b) How high does his body rise above the water? Round to two decimal places.

25.
At the end of a race, a runner decelerates from a velocity of 9.00 m/s at a rate of 2.00 m/s2. (a) How far does she travel in the next 5.00 s? Round your answer to one decimal place.

25.
At the end of a race, a runner decelerates from a velocity of 9.00 m/s at a rate of 2.00 m/s2. (b) What is her final velocity after 5.00 s? Round your answer to three decimal places.

45.
A dolphin in an aquatic show jumps straight up out of the water at a velocity of 13.0 m/s. (a) After how much time does he come to a stop before falling back down? Round to two decimal places.

45.
A dolphin in an aquatic show jumps straight up out of the water at a velocity of 13.0 m/s. (b) How high does his body rise above the water? Round to two decimal places.