A bicycle racer sprints at the end of a race to clinch a victory. The racer has an initial velocity of 11.5 m/s and accelerates at the rate of 0.500 m/s² for 7.00 s. (a) What is his final velocity? Answer: (b) The racer continues at this velocity to the finish line. If he was 300 m from the finish line when he started to accelerate, how much time did he save? Answer: m/s Answer: S (c) One other racer was 5.00 m ahead when the winner started to accelerate, but he was unable to accelerate, and traveled at 11.8 m/s until the finish line. How far ahead of him (in meters and in seconds) did the winner finish? mor S

A bicycle racer sprints at the end of a race to clinch a victory. The racer has an initial velocity of 11.5 m/s and accelerates at the rate of 0.500 m/s² for 7.00 s. (a) What is his final velocity? Answer: (b) The racer continues at this velocity to the finish line. If he was 300 m from the finish line when he started to accelerate, how much time did he save? Answer: m/s Answer: S (c) One other racer was 5.00 m ahead when the winner started to accelerate, but he was unable to accelerate, and traveled at 11.8 m/s until the finish line. How far ahead of him (in meters and in seconds) did the winner finish? mor S

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

When gravitational acceleration is needed, use 9.81 m/s2 or 32.2 ft/s2 whichever is applicable.
A 2411 Ib car is moving up a 7 degree incline as shown. Determine how many seconds will it take for the car to decelerate from 105 ft/s to 39ft/s, if the braking force is equal to 60 lb assuming that deceleration is constant and frictional effects are neglected. Round off only on the final answer expressed in 3 decimal places. impulse exer2(1).png
In a skating jump, a skater rotates around their vertical central axis. Duringthe jump, the skater's rotation rate is increased by bringing their arms intotheir side. a) When bringing their arms into their side, do es the rotational kinetic energyof the skater go up, go down or stay the same? If it changes, where do es theenergy for this change come from or go to? b) Show that the change in rotational kinetic energy of the skater ∆KR canb e found by (see image) here KRi is the initial rotational kinetic energy of the skater, ωf is the nalangular sp eed and ωi is the initial angular speed. c) During the jump, when the skater draws their outstretched arms inwards,what total torque is acting on the skater if their final rate of rotation is tworotations p er second? d) After landing again, the skater is able to stop rotating and come to acomplete standstill in 0.7s. What is the average ratio of the torque on theskater to the skater's total moment of inertia during the time they come to…
In a rope-climbing competition, all of the lifting is done by the arms; legs can only dangle. Imagine 220-lb Garvin Smith in training, hanging stationary from the rope, his legs off the floor. When prompted by his coach, he rapidly lifts his center of mass by 4 ft. in 0.65 s. Calculate Garvin Smith's acceleration. Round the final answer to one decimal place. Determine the net force (“force imbalance”) producing the acceleration. Round the final answer to one decimal place. Which forces are acting on Smith? (Note that his arms are part of himself, so they cannot exert a force on Smith.) With what magnitude force is Smith pulling down on the rope? Round the final answer to one decimal place. The force of 130.2 lb points _____.
The elevator shown in the figure moves downward with a velocity of 740 m/s and acceleration 730 m/s^2. Determinea) the velocity and acceleration of the cable Cb) the velocity and acceleration of the counterweight W
Q16. A 3.4-kip car speeds up uniformly from 0 to 57 mph in 39 seconds up the 15⁰ incline. If the engine has an efficiency of e = 0.73, what is the power input (in hp) when the car's speed reaches that final speed? (1 hp = 550 ft-lb/s) Please pay attention: the numbers may change since they are randomized. Your answer must include 1 place after the decimal point. Take g = 32.2 ft/s². Your Answer: Answer 15°
4) You were leisurely flying your F-18 when you encounter an alien aircraft. The alien was flying at an altitude of 3 km while you were at an altitude of 600 m. You begin to increase your speed at a rate of 2.0 m/s?. You are traveling at a speed of 750 km/h at the instant when 0 = 45° and at the same instant the alien has a constant velocity of 1,500 km/h. a) Determine the velocity and acceleration vectors (in m/s and m/s², respectively) of the alien as observed by you. [Ans. to Check: VB/A = 208.4 įm/s] b) Determine the time rate of change of the vector r that is between you and the alien ship in m/s. In other words, find r. [Ans. to Check: i = 147.32 m/s] Hint: Do not forget about your ability to dot in different directions to eliminate variables from the equation. c) Calculate the angular velocity of the spaceship relative to you in rad/s. d) Determine the radial and angular accelerations in m/s? and rad/s². [Ans. to Check: ï = 4.86 m/s²] VB 3 km VA 600 m
A bicycle moves along a straight road such that its speed is described by the continuous function f(t). You are asked to determine the magnitude of the displacement of the bicycle between 5.1 and 21 seconds. To do this, you must solve the integral below. What should the bounds on the integral be? Write your answer to one decimal place. As - fo f(t)dt a = Number b = Number seconds seconds
Q3 A-A race car accelerates uniformly from 18.5 m's to 46.1 m's in 247 seconds. Determine the acceleration of the car and the distance traveled. B-A feather is dropped from rest on the moon from a height of 1.40 meters. The acceleration of gravity on the moon is 1.67 m/s. Determine the time for the feather to fall to the surface of the moon.
3. For this series of 5 questions, a block is released from the position shown with a certain initial velocity. It then slides down the smooth (friction-less) path for which the function is given in the image. You will be asked to solve for different things. Please pay attention: the numbers may change from problem to problem since they are randomized. 4) If the block has mass of 65 kg and its initial velocity is 2.3 m/s (at x = 3 m), determine the normal force N which the path exerts on the block right before it reaches the spring (at x = 0). Your answer must include 1 place after the decimal point and the proper unit. Take g = 9.81 m/s². k = 5 kN/m puudu Your Answer: Answer units y = 0.25x² 3 m v X