The maximum straight-line deceleration of a racing car under braking is Sms. What is the minimum stopping distance of the car from a velocity of 100 km/h? What does this distance become if the velocity has twice this valuc?

Q: A stone is thrown hotrizontally with an initial speed of 10 m/s from the edge of a cliff. A stop…

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Q: A volyball player hits a ball vertically upwards with an intial velocity of 7.0 m/s. What is the…

A: Write the expression for maximum height attained by the volleyball.

Q: Someone launches a ball straight up releasing it when it reaches the top of their head.  The ball…

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Q: On a ride called the Detonator at Worlds of Fun inKansas City, passengers accelerate straight…

A: The acceleration is given by,

Q: L.A. Dodgers's centerfielder Matt Kemp is one of the fastest players in baseball today, near the top…

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Q: . A ball is directly thrown upward with a velocity of 5 m/s. (a) Find the maximum height reached in…

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Q: A cyclist is coasting up a hill. At t=0, the cyclist has a velocity of 14.5 m/s. a) If the…

A: Given data:  Initial velocity (u) = 14.5 m/s Final velocity (v) = 0 m/s Acceleration (a) = -2.5 m/s2…

Q: Q2: A long freight train travelling at 120 km/h (towards the east on a straight track) needs a…

A: Using kinematic equation we can find the required values since mass of the train is not given. Given…

Q: Two cars are traveling at constant speeds of 80 km / h and are on a straight road behind each other…

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Q: A boy runs for 21 seconds.  His minimum speed is 2.8 m/s, while his maximum speed is 4.5 m/s.…

A: Given,  t = 21 seconds  u = 2.8 m/s  v = 4.5 m/s  As we know from the Newton's first equation of…

Q: SpaceX plans to transport humans to Mars, but experienced a few rocket failures while on initial…

A: initial velocity of rocket = V0 = 0 m/sacceleration = a = 52.5 m/s2time = t = 7.8 sec

Q: Helmets to Prevent Concussions. In contact sports such as American football, hockey, and rugby,…

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Q: 5. A snowboarder starting from rest accelerates uniformly downhill at 3.0 m/s 2 [forward]. How long…

A: We will answer the questions using kinematic equations of motion. The detailed steps are given…

Q: Formula One racers speed up much more quickly than normal passenger vehicles, and they also can stop…

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Q: What constant acceleration, in SI units, must a car have to go from zero to 60 mph in 10 s?

A: We have to find the constant acceleration of the car. We are aware that the automobile must…

Q: A boy start to run up a staircase, he has a velocity of 6m/s at the lowest point of his motion.…

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Q: Formula One racers speed up much more quickly than normal passenger vehicles, and they also can stop…

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Q: A bocce ball is rolled across a mat with an initial velocity of 8m/s. a) At a time of of 4 seconds,…

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Q: Q2: A long freight train travelling at 120 km/h (towards the east on a straight track) needs a…

A:

Q: A top fuel dragster can cover a quarter-mile (402 m) in 4.44 seconds, from rest. Assuming that the…

A: Given data:   Initial velocity (u) = 0 m/s Distance (d) = 402 Time (t) = 4.44 s Required:…

Q: A single-engine air plain starts its engine at one end of the runway. It accelerates at a constant…

A: Given, velocity v=38 m/s time t=20 s

Q: Zeke pitched a baseball and left his hand at speed of 55.0 m/s. If he was in contact with the ball…

A: Final speed v as the ball leaves Zeke's left hand=55m/sThe initial speed u must have been…

Q: a) If a flea can jump straight up to a height of 0.440 m, what is its initial speed as it leaves the…

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Q: A rocket-powered sled moves along a track, eventually reaching a top speed of 164 m/s to the west.…

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Q: Win Blonehare and Kent Swimtashore are sailboating in Lake Gustastorm. Starting from rest near the…

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Q: An apple falls from an apple tree, from a height of 12m above the ground. (a) How much time it will…

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Q: Certain animals are capable of running at great speeds; other animals are capable of tremendous…

A: The rate of change in position, that is, the rate of motion, is said to be the speed. And, the rate…

Q: Question number 4

A: (a)The equation for velocity is,

Q: hat falls from s bridge that is 90 m above a road. It falls directly into a car, moving with a…

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Q: A flighter jet lands on the flight deck of an aircraft carrier. The jet must reduce its speed from…

A: Given : Initial velocity (vi) = 153 m/s Final velocity (vf) = 0 m/s Time (t) = 2.0 s

Q: A 20-kg child slides down a playground side with a constant acceleration of a=1.3m/s^2 parallel to…

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Q: 3. Starting from rest, a particle moving in a straight line has an acceleration,a = (3t – 5) where t…

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Q: My final velocity number is 20 m/s, my time is 19.05 s, my distance is n/a, my acceleration is 0.892…

A: Given data *The final velocity is v = 20 m/s *The given time is t = 19.05 s *The given acceleration…

Q: 6. At the instant the traffic light turns green, an automobile that has been waiting at an…

A: Given, The initial velocity of an automobile is ua=0 acceleration of the automobile is aa=2m/s2 The…

Q: A large rock is dropped from the top of a high cliff. Assuming that air resistance can be ignored…

A: The objective of the question is to find out the speed of the rock 6 seconds after it is dropped…

Q: Joe decides to race his younger sister, Debbie, and gives her a 25 m head start. At the instant Joe…

A: let we start our time when joe start running (time t=0)let joe catches her after time tAfter time…

Q: A bike from rest t=0, speeds up with a constant acceleration 0f 1.54 for 6 seconds. Then with the…

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Q: The drivers reaction time is equal to 0.65 s and the brakes stop the vehicle with an acceleration of…

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Q: defenders throw rocks straight down on their attackers from a 15-m-high wall, with initial speed 10…

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Q: Zeke pitched a baseball and left his hand at speed of 55.0 m/s. If he was in contact with the ball…

A: Given: Initial velocity u = 0 Final velocity v = 55 ms Distance S = 1.50 m To determine: a.…

Q: A top fuel dragster slows at a constant 3.00 m/s2 over a quarter mile track. What final speed would…

A: quarter mile = 1/4 th of a mile =402.336 m