A car travels around an oval racetrack at constant speed. The car is accelerating A a. at all points except A, B, C, and D. b. at all points except A and C. C. nowhere, because it is travelling at constant speed. d. at all points except B and D. O e. everywhere, including points A, B, C, and D.
Q: A rubber stopper on the end of a string is swung steadily in a horizontal circle. In one trial, it…
A: Given, Speed in the first trial =v Radius of circle in first trial = r Speed in the second trial =…
Q: Which is true for a car moving around a circular track with constant speed? (Select all that apply)…
A:
Q: A 700 N worker attaches a system of pulleys and cords to a 2500N crate, as shown in the Figure…
A:
Q: 4 .A plane travelling at 78 km/h [N] is blown westward by a wind with a speed of 56.0 km/h. What is…
A:
Q: Racing greyhounds are capable of rounding corners at very high speed. A typical greyhound track has…
A: Given:- The rotational body have centripetal acceleration divided with acceleration…
Q: A cannonball is launched from ground level with an initial speed of v0 straight up in the air What…
A: Given, Initial speed of the cannon ball, vo The speed of the cannon ball when it reaches height h…
Q: An object moves in a circular path at a constant speed. Compare the direction of the object's…
A: Given An object moves in a circular path at a constant speed. We have to choose the correct option…
Q: 1. An example of an object whose motion is not accelerated is a car that O a. turns a corner at a…
A: At the corner, the speed is constant but the direction is changing at each instant. So, the car will…
Q: A plane flies 150 km [N] and then 400 km [E]. What is the total displacement? a. 427 km [N21°E] b.…
A: Given data: Displacement (d1) = 150 km, towards North Displacement (d2) = 400 km, towards East…
Q: You are riding a donkey that gets scared by an earthquake. If the donkey was originally traveling at…
A: Given: The initial velocity of the donkey is 12.5 m/s. The final velocity of the donkey is 13.7 m/s.…
Q: A student throws a 2.5kg ball horizontally off the top of a building with an initial speed of 4.25…
A: mass of first ball = m1 = 2.5 kg initial horizontal velocity = V0x = 4.25 m/s mass of second ball =…
Q: A car drives around a circular track of diameter 180 m at a constant speed of 37.1 m/s. During the…
A: Given Data : The diameter of the track is given as D = 180 m. The speed of the car is given as 37.1…
Q: In an analog clock and assuming the hands as vectors, how is the displacement covered by the head of…
A: The displacement is defined as the shortest distance between the final position and the initial…
Q: 2. A boat entered a marina at 1.25 m/s [W 30.0° N]. Over a time interval of 4.00 s the captain…
A: We have a boat with initial velocity v=1.25 m/s directed at an angle 30o north of west which is…
Q: An airplane is flying at 90 m/s [SW]. The pilot performs a 180° turn in 30.0 s without changing…
A:
Q: 1. Two heavy balls have the same diameter, but one is twice the weight of the other. They are…
A:
Q: 9. A car drives to the north, but it speeds up. Which direction does its acceleration point?…
A: The car is moving towards the north and speeding up. We need to find the direction of acceleration.
Q: A baseball was thrown directly up in the air, then falls back to the ground freely. Which of the…
A: Given data: Baseball thrown directly upward Then fall back to ground Required: Displacement with…
Q: 2. A girl jogs around a horizontal circle with a constant speed. She travels one half of a…
A: (a) firstly we calculate radius of the circle Which is one half of revolution=20m…
Q: From the surface of the earth, an object is thrown upward with a speed of 19.6 m/s. What is the…
A: If neglect air resistance on the projected object, the only force acting on the projectile is…
Q: A ball is thrown from the top of 20.0 m tall building at an angle of 45° above the horizontal. The…
A:
Q: 6. A cannon ball is launched with a speed of 120 m/s at an angle of 30°. a. How fast is the…
A: Given- Velocity of cannon ball(u)=120ms Launch angle(θ)=300For velocity in projectile motion,Along…
Q: The speedometer on your car reads a steady 35 mph. Could you be accelerating? Explain.
A: The acceleration of an object is defined as the rate at which its velocity is changing. If the…
Q: 8. A car drives to the north, but it slows down. Which direction does its acceleration point?…
A: Explanation: When the car moves, the force is applied by the engine of the car and the car…
Q: 85. A plane travels N30°W at 450 mph and encounters a wind blowing due west at 30 mph. (See Example…
A: A vector quantity is the one that has magnitude and direction. displacement, velocity, and…
Q: As the moon moves around the earth at a mean orbital velocity of 1.022 km/s is the moon…
A:
Q: 1. A car starts from position A (0m) and drives in a straight line to position B (20m away from A)…
A: 1. The average speed of the car is given by the total distance travelled divided by the time taken.…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
- A search and rescue helicopter travels at constant speed in a horizontal plane. The figure below shows a portion of the path traveled by the helicopter, as viewed looking down from above. The helicopter's path includes three straight portions between points "1" and "2", points "4" and "5", and points "7" and "8", each of which has a length of 4000 m, as shown in the figure. It takes the helicopter 2000 seconds to travel along each of these straight portions of its path. The semi-circular portions of the path (also shown in the figure) have the same radius R=500m. +y YNorth) 8. 4 4000 m A semi-circle is one half of a circle. East 6.3. Pilots of high-performance aircraft risk loss of consciousness if the undergo accelerations exceeding about 5g. For a military jet flying at 2470 km/hr (about twice the speed of sound), what is the minimum time it takes the jet to reverse its direction in a circular turn while keeping the acceleration below the 5g safety threshold?10. A car drives to the north at constant speed. Which direction does its acceleration point? Explain.
- 4. A car is driving at a speed of 25 m/s on a horizontal road. Determine the minimum distance in whichthe car will stop in each of the following cases.A. On a rainy day where µS = 0.125.B. On a sunny day where µS = 0.650.1. You are driving at 8.00 m/s south. You accelerate uniformly at 1.10 m/s? north for 5.00 seconds. How fast are you going at the end of the 5.00 seconds? What is your displacement?12. An airplane turns slowly for 9.2 s horizontally. The final velocity of the plane is 3.6 X 10 km/h [N]; the average acceleration during the turn is 5.0 m/s [W]. What was the initial velocity of the plane? A
- An automobile is going around a circle with a constant speed of 25mph. Choose the correct statement . Choose all that apply. a. Velocity is changing.(not constant) b. Automobile is accelerating . c. Velocity of the automobile is constant. d. Acceleration of the automobile is zero.12. An object is thrown horizontally at a height of 2 meters at a velocity of 750 m/s.Assume no air resistance. a. How long until the object reaches the ground? b. How far did the object travel horizontally when it hit the ground? BI U ABE |A- HTML2. A car is traveling a road that includes two sides of a rectangle with the sides a and b with a constant speed. What is the speed if the magnitude of the average velocity of the car is v?