conds. Its speed at the end of 5.0 seconds is 48 km/h a. What is the car's acceleration? b. What will be its speed after 10 seconds? you conclude that a car has acceleration if its speedometer indicates a steady km/h? Why or why not? it possible for an object's velocity to be negative while the acceleration is sitive? it possible for an object to have both negative velocity and negative celeration?

conds. Its speed at the end of 5.0 seconds is 48 km/h a. What is the car's acceleration? b. What will be its speed after 10 seconds? you conclude that a car has acceleration if its speedometer indicates a steady km/h? Why or why not? it possible for an object's velocity to be negative while the acceleration is sitive? it possible for an object to have both negative velocity and negative celeration?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

4. There are two frogs named Eroggy and Jumpy. They jumped from the top of a vertical cliff. Froggy just drops and reaches the ground in 3.50 s, while Jumpy jumps horizontally ((bida bida siya, char! Hahall with an initial speed 95 cm/s. a. How far from the base of the cliff will Jumpy hit the ground? b. How high is the vertical cliff? c. If Jumpy jumps with an angle of 30 degrees with respect to the horizontal, what should be its initial velocity for it to land on the same spot as he did when he jumped horizontally?
2. A sky diver was falling at the speed of 12 m/s when he opened his parachute. Which of the following was his possible vertical acceleration the moment he opened his parachute? a. 1 m/s^2 b. -1.2 m/s^2 c. 0 m/s^2 d. -1/8 m/s^2 e. None of the above
Answer all the following
x = xo + vot + , v = vo + at , vở + 2aAx 1. A car moving on a straight road increases its speed from 10 m/sec to 20 m/sec in 5 sec. What is the acceleration of the car? A. 1 m/sec? B. 2 m/sec? C. 3 m/sec? D. 4 m/sec? 2. A car moving on a straight road increases its speed from 10 m/sec to 20 m/sec in sec. How far did the car go in those 5 sec? А. 25 m В. 50 m С. 75 m D. 100 m 3. A cat is moving at 18 m/sec. The cat then accelerates at 4 m/sec? for 2 seconds. What is the new velocity of the cat after 2 seconds? A. 20 m/sec В. 22 m/sec C. 24 m/sec D. 26 m/sec 4. A race car is traveling at 76 m/sec. The race car then slows down at a rate of -9 m/sec2 for 4 seconds. What is the new speed of the race car after 4 seconds? A. 40 m/sec В. 50 m/sec C. 60 m/sec D. 70 m/sec
A jet plane starts from rest and accelerate at a constant 3 m/s2 for 30 s before leaving the ground. a. How far did it move along the ground? b. How fast was it going when it took off?
7. A feather is dropped 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. a. 2.29 s b. 1.29 s. c. 1.29 m d. 0.29 s. a C d
A bike rider started his descent from a hill at 16 km/hr and reached downhill at 59 km/hr. What was the rider's acceleration if the total distance travelled was 1.2 kilometers. a. 0.1037m/sec² b. 325.9m/sec² C. 329.0m/sec² 0.0905m/sec² e. 0.0664m/sec²
I see that an object has is decelerating, what does this tell me about A? A. Nothing at all, what i see has nothing to do with A B. A is a positive C. A is a negative D. A could be either, depending on the direction of the velocity Can I do the vertical part of a projectile motion problem separately from the horizontal part? A. Always. Horizontal motion is completely separate from vertical motion though they share time B. Never. C. Only under very special circumstances
1. A jet-propelled motorcycle starts from rest, moves in a straight line with constant acceleration, and covers a distance of 64 meters in 4 seconds. What is the final velocity? a. b. How much time was required to cover half of the total distance? c. What is the distance covered in 2 seconds? d. What is the velocity when half the total distance has been covered/ e. What is the velocity after one-half the total time?
at its highest point? 19. A ball thrown vertically upwards would have an acceleration of b. 1 m/s? c. 9.8 m/s? d. -9.8 m/s? a. 20. A ball thrown vertically upwards would have a speed of b. 1 m/s at its highest point? c. 9.8 m/s d. -9.8 m/s a.
Amodel rocket is fired vertically upward with an initial velocity of 42 m/s from a tower 165 m high. a. How long will it take for the rocket to reach its maximum height? b. What is the maximum height? c. How long will it take for the rocket to pass its starting point on the way down? d. What is the velocity when it passes the starting point on the way down? e. How long will it take for the rocket to hit the ground? f. What will be its speed at impact?
3. Jakub is driving at 25.0 m/s when he sees the speed limit so he slows down (decelerates) at -4.0 m/s2 for 4.0 seconds. a. Calculate Jakub's final speed. Ax D V = V=