In which of the following cases does a car have a negative velocity and a positive acceleration? A car that is traveling in the Check all that apply. +x direction increasing in speed. -x direction increasing in speed. -x direction at a constant 20 m/s. +x direction decreasing in speed. O -x direction decreasing in speed. O O

Q: As the shuttle bus comes to a sudden stop to avoid hitting a dog, it accelerates uniformly at -4.1…

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Q: At the instant the traffic light turns green, a car that has been waiting at an intersection starts…

A: Given data: Constant acceleration, a=3.20 m/s2 Constant speed, v=20.0 m/s

Q: Would an object dropped three times from the same height would hit the ground at the same time?

A: Since, for a freely falling body which is dropped from height(h) and takes time(t) to reach the…

Q: A driver of a car going 21 m/s suddenly sees the lights of a barrier 40 meters ahead. It takes 0.75…

A: Given: The speed of the car is 21 m/s. The barrier distance from the driver is 40 m. The time is…

Q: The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows…

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Q: A car travels at 30.0 m/s and sees a truck 100.0 m ahead of it that is traveling at 20.0 m/s. The…

A: SOlution: Given that cars speed = 30 m/s truck speed  20 m/s distance = 100 m brakes appied after 2…

Q: You are driving through town at 10.0 m/s when suddenly a ball rolls out in front of you. You apply…

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Q: A car is about to exit through a ramp traveling at a speed of 60 km/h. It starts decelerating…

A: Given,/ Speed at A,vA=60 km/h=16.67 m/s Speed at B,vB=40 km/h=11.11 m/s Deceleration from B to…

Q: A speeding car traveling at a constant velocity of 3 × 10'm/s passes a police car initially at rest…

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Q: A sperm whale can accelerate at about 0.0900 m/s² when swimming on the surface of the ocean. How far…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: A burglar car 'A' has started with an acceleration of 3.8 m/s, and police car 'B' starts after 4…

A: Suppose Car B catches Car A after time 't' , So at that time total distance traveled by both will be…

Q: A car traveling 75.0 km/h on a straight road is 2300 m behind a truck traveling at 69.0 km/h. How…

A: Given -          speed of car = 75 km/hr          speed of truck = 69 km/hr          distance…

Q: A sperm whale can accelerate at about 0.0800 m/s² when swimming on the surface of the ocean. How far…

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Q: QUESTION 15 If the velocity of an object is zero at some point, then its acceleration must also be…

A: 15) Consider an example of motion along the vertical direction. When an object is thrown in the…

Q: If you were to drop a rock from a tall building, assuming that it had not yet hit the ground, and…

A: It is given that,

Q: A certain freely falling object requires 1.40 s to travel the last 36.5 m before it hits the ground.…

A: Given The distance traveled in 1.40 s is So = 36.5 m. The time is taken by the object to cover So…

Q: ..A motorboat starting from rest on a lake accelerates in a straight line at a constant rate of 3.0…

A: Given data:  Initial velocity (u) = 0 m/s Acceleration (a) = 3.0 m/s2 Time (t) = 8.0 s Required: The…

Q: A certain car is capable of accelerating at a rate of +0.50 m/s2. How long does it take for this car…

A: Write the given values with suitable variables. Here, a denotes the acceleration, u denotes the…

Q: 1. On a highway, the driver applies the brakes when he sees rocks on the road due to a landslide.…

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Q: You are driving through town at 12.0 m/s when suddenly a ball rolls out in front of you. You apply…

A: initial velocity, u = 12 m/s  final  velocity, v = 0 m/s acceleration, a =  - 3.5 m/s2

Q: A person takes a trip, driving with a constant speed of 91.0 km/h except for a 22.0 min rest stop.…

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Q: /s^2 for 7.0s. How far did it

A: The initial velocity of the car u =0 m/s  The  acceleration of the car is a = 5.47 m/s2 The time t =…

Q: 3) A commercial airplane accelerates on a runway in Newark International airport at a rate of 3.20…

A: The expression for the travelled distance,

Q: 20. If a car accelerates from rest at a constant 5.5 m/s?, how long will it take for the car to…

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Q: A car traveling with an initial velocity of 23.67 m/s to the east, sees a wall 78.64 meters to its…

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Q: If a car is traveling eastward, can its acceleration be westward?Explain.

A: The acceleration is the rate of change of velocity with time. So the speed of the object decreases…

Q: A car running at 12.0 m/s passes through a police mobile. As soon as it reaches the police mobile,…

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Q: At the instant the traffic light goes green, a car waiting at the intersection starts ahead with an…

A: Given: velocity of the bus, v=12 m/sInitial velocity of the car, u=0Acceleration of the car, a=2.5…

Q: A car capable of a constant acceleration of 2.69 m/s is stopped at a traffic light. When the light…

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Q: 14. (II) Calculate the average speed and average velocity of a complete round-trip in which the…

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Q: A brick is dropped from the roof of a tall building. After it has been falling for a few seconds, it…

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Q: Speed of a car 30 m/s with the constant acceleration of 5 m/s^2 . Find the distance travel by the…

A: Given : vo = 30 m/s a = 5 m/s2 v = 100 m/s

Q: Does a negative acceleration always mean that an object is slowing down? Yes or No Explain.

A: No, A negative acceleration can also mean that the object is speeding up.

Q: 18- A car moving with the acceleration of 2 m/s2 from rest, its position after t=3s will be? O A) 10…

A: Given, Acceleration = 2 m/s2 . Car starts from rest . We have to find its position after 3 seconds.…

Q: A truck is stopped at a stoplight. When the light turns green, the truck accelerates at 2.5 m/s. At…

A: Given data:  Initial speed of truck (v0) = 0 m/s Acceleration (a) = 2.5 m/s2 Speed of car (v) = 15…

Q: What does the speedometer of a car measure speed or velocity? Explain.

A: Speedometer

Q: From a helicopter that is suspended in the air, a military man falls freely by 119.17 m and at that…

A: Recall vf=vi+atandy=1/2gt2 when vi=0

Q: An object has increasing velocity when its acceleration is greater than zero. It has increasing…

A: The velocity of the ball is increasing when its acceleration is greater than zero and the velocity…

Q: A UFO going 55 m/s east suddenly experienced a constant acceleration of 19 m/s² west for 49 s.…

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Q: acceleration of the car

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Q: suppose that a car traveling to the west (-x direction) begins to slow down as it approaches a…

A: The acceleration is states that the rate of change of velocity, if a driver slowing down to stop at…

Q: A police car accelerates at a constant rate of 4.0 m/s2 from rest.

A: first calculate the velocity then find displacement using Newton's Laws of motion

Q: Mary runs to the right with the velocity 12.0 m/s. When she reaches Karl, she accelerates at 3.00…

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Q: According to recent typical test data, a Ford Focus travels 0.23 mi in 19 seconds, starting from…

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Q: An automobile accelerates uniformly from rest to 60 mi/hr in 28 s. Find its constant acceleration…

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Q: A motorist travels at a constant speed of 39.0 m/s through a school zone; exceeding the posted speed…

A: To determine,how much time9t) was elapsed between the moment the speeder passesthe policeman and the…