A car is moving in a straight line has an acceleration a = 4t – 9. Its initial velocity is 4 m/s. Determine its velocity after 6 seconds.

Q: A body moves in a straight line so that its acceleration is a=3v, where a is in m/s2 and v in m/s.…

A: a= 3v  If S= 3m when v= 1.2m/s

Q: A car starts from rest and reaches a velocity of  18.0 m/s in 12.0 seconds. The car then continues…

A: For 12.0 seconds ,  Final velocity = 18.0m/s Initial velocity = 0 m/s Time taken = 12.0s…

Q: An object ,initially at rest is subject to an acceleration of 27m/s2.How long will it take for the…

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Q: train is travelling down a straight track at 20 m/s when the engineer applies its brakes, resulting…

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Q: The average speed of a car is 27 m/s during the first 10 seconds of acceleration. What is the…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: A particle travels along a straight line with a velocity = (15t – 9t2) m/s , where t is in seconds.…

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Q: Car moving from rest and final velocity is 30 m/s with the acceleration of a=6 m/s^2. Find the time…

A: Solution: Given that final velocity v = 30 m/s intial velocity u=0 m/s (as in the rest) acceleration…

Q: Traumatic brain injury such as concussion results when the head undergoes a very large acceleration.…

A: Hence, Hardwood floor magnitude      1670.2m/s2 Hardwood floor duration     1.59 ms Carpeted…

Q: Traumatic brain injury such as concussion results when the head undergoes a very large acceleration.…

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Q: You are stuck on a two-lane road behind a truck traveling 64.4 km/h (40 mi/h). You pull into the…

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Q: A toy car moving in the -x direction experiences an acceleration of +1.5 m/s2. What does this mean?…

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Q: car, starting from rest, accelerates in a straight-line path at a constant rate of 6.46 m/s2. How…

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Q: A policeman is sitting on the side of the road in his cruiser when he notices a car coming up behind…

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Q: At time t= 0, a car moving along a straight line has a velocity of 16 m/s. It slows down with an…

A: acceleration = a = -0.5 t m/s2 at t=0 velocity = V0= 16 m/s

Q: You are stuck on a two lane road behind a truck traveling 64.4 km/h (40 mph). You pull into the…

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Q: Traumatic brain injury such as concussion results when the head undergoes a very large acceleration.…

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Q: What is the distinction between speed and velocity? Describe a situation in which an object's speed…

A: NOTE: ● The physical quantity which has only magnitude ,called scalar quantity. ●The physical…

Q: A car moves along a straight line whose equation of motion is given by s=5+4t-t^2, where s is…

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Q: Suppose a car merges into freeway traffic on a 200 - m - long ramp. If its initial velocity is Om /…

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Q: On Earth, how far will an object fall in 1 minute? Ignore air resistance. Assume the object is high…

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Q: than 800 m/s2 lasting for any length of time will not cause injury, whereas an acceleration greater…

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Q: A car and a jeep are 7 km apart. The car starts from rest and travels towards the jeep with an…

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Q: A bicyclist moving at 12 m/s passes a runner at rest. The runner chases the bicyclist with an…

A: Given Velocity of the bicyclist = 12 m/s Acceleration of the runner =1.5 m/s2 Initial velocity of…

Q: a car starts from rest and travels 10 sec. with an acceleration of a-4-0.3t. then runs for 30…

A: Given : Acceleration for first 10s, a = 4.03 m/s2 Retardation after 30s, r = 3.125 m/s2

Q: Car moving from rest and in a 30 sec it cover a distance of 40 km with the acceleration of 3 m/s .…

A: Initial velocity of car (u) = 0 Time (t) = 30 sec distance (s) = 40 km or s = 40000 m acceleration…

Q: You attach a meter stick to an oak tree, such that the top of the meter stick is 2.67 meters above…

A: The diagram of the system is given below:                                               According…

Q: An aircraft is initially moving with a velocity of +7.0 m/s and travels for 8.0 s with a uniform…

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Q: A bike and a tricycle travels on the same road but on opposite direction. The bike jolts from rest…

A: A bike and a tricycle travelling in opposite directions towards each other  Bike accelerates first…

Q: bus moves the first few meters of its journey with an acceleration of 5 m/s2 in 10s and the next few…

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Q: A race car, from rest, accelerates 9 m/s2. How long will it take for the car to cover a distance of…

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Q: From rest, the cheetah can accelerate at 8.8 m/s2 and reach a top speed of 30 m/s (108 km/h)! It can…

A: The equations of motion required are x = u×t + 0.5×a×t2v = u + a×tx is displacementu is initial…

Q: A rocket rises straight up from rest with an acceleration of 1.50 m/s2 at which point its engine…

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Q: An automobile starts from rest and reaches a speed of 42 m/s in 15 seconds. The acceleration…

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Q: An athlete wants to run a 1500m race with an average velocity of 6.00 m/s. After running the first…

A: The speed of the athlete in the first 500 m is,

Q: A plane flying at a speed of 88 m/s has a constant acceleration of -8.0 m/s2. How far will It travel…

A: Equation for motion, S=ut+12at2

Q: A car can accelerate at a rate of 5 m/s^2. What is the distance the car travel before it stops if…

A: Given the intial velocity of the car u = 25 m/s Acceleration of the car is a = 5 m/s² Let the…

Q: Traumatic brain injury such as concussion results when the head undergoes a very large acceleration.…

A: Given, For Hardwood floor, where u is the initial velocity and v is the final velocity and child…

Q: Starting with a constant velocity of 50 km/h, a car accelerates for 30 seconds at an acceleration of…

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Q: A car moves with a constant velocity of 6.7 m/s and passes a road sign. A truck begins to move just…

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Q: 7. If the vehicle velocity changes from 0-60mph in 4.2 s, Calculate the average acceleration when…

A: 7)  Change in velocity = 60mph = 60* 1.60934  = 63.66 Kmph t = 4.2 s = 4.2/3600 = 1.167*10-3 h…

Q: There is a 1500 mile race course. The max forward acceleration is 4 m/s2 and the max backward…

A: Given terms: To determine: Equation for the fastest time. Position, velocity and time.

Q: Car A starts from rest at t=0 and travels along a straight road with constant acceleration of 6…

A: Take the initial position of car A to be xi,A=0 ft. The equation of motion car A  when it moves with…

Q: Traumatic brain injury such as concussion results when the head undergoes a very large acceleration.…

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Q: A car moving in a straight line accelerates from rest at a rate of 6.00 m/s², for 5.00 s. It then…

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Q: A mountain climber stands at the top of a 35.0 m cliff that overhangs a calm pool of water. She…

A: Height of cliff (h) = 35 m Velocity of first stone (u) = -1.20 m/s