An object traveling with an initial velocity of 4 m/s slows down to rest in 20 m. What is its acceleration during this slow down period?
Q: A car is traveling at 30.0 m/s ( about 70 mph) which crashes into a concrete barrier. The front of…
A: We know thatv2=u2+2asWherev=Final velocityu=Initial velocitya=accelerations=Displacement
Q: A car, initially at rest, accelerates at 5.08 m/s2 for 5.1 s. How far did it travel in this time?
A: we know that displacement s=ut+(1/2) at^2 where t is time , u is the initial velocity , a is…
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Q: An electric vehicle starts from rest and accelerates at a rate of 2.1 m/s2 in a straight line until…
A: Given: from t=0 to t1 initial velocity u1=0m/s acceleration a1=2.1 m/s2 final velocity v1=21 m/s…
Q: A prototype car starts from rest and accelerates at a constant rate to 30 m/s in 4.4 seconds. How…
A: Initial velocity = u = 0 m/s Final velocity = v = 30 m/s time = t = 4.4 s Acceleration will be…
Q: You spot your friend coming down the sidewalk toward you on her skateboard at 4.0m/s. Your friend is…
A: The speed of the friend in stake board is vs = 4 m/s. The initial speed of the person in bicycle is…
Q: A fighter jet can accelerate at 12 m/s2 At this rate, how long will it take for it to reach a speed…
A: Given data: Acceleration (a) = 12 m/s2 Initial velocity (V0) = 0 m/s, rest Final velocity (V) = 72…
Q: A high performance sports car go to 100mph (44.7 m/s) in 7.9s. what is the car acceleration ?…
A: Given: The speed of sports car is v=44.7 m/s. The time is t=7.9 s. The expression to calculate…
Q: Consider a car moving in the positive direction with an initial velocity of 35 m/s slows down at a…
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Q: The top speed of a utahraptor is 9 m/s. How long would it take utahraptor to run 1000 m if it…
A: Given data: Initial velocity (u) = 0 m/s Final velocity (v) = 9 m/s Distance traveled (d) = 1000 m…
Q: A cyclist is riding at a speed of 6 m/s when a tress suddenly falls infront of her. She has a…
A: Given, Initial velocity, 6 m/s Reaction time, 0.2 sec
Q: A ball rolling down a hill uniformly accelerated at 4 m/s2. Assuming that it starts from rest, what…
A: Given acceleration of ball a=4m/s2 Initial speed u=0m/s Time t=3s
Q: Suppose the crate starts from rest and accelerates at 0.21 m/s/s to the right for 2.4 s. What is the…
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Q: A runner speeds up from rest at a constant rate. She covers 8.0 m in 2.0 s. If she continues…
A: Given: distance covered by her, S = 8.0 m time taken by her, t = 2.0 sec
Q: Consider a car moving in the positive direction with an initial velocity of 31 m/s slows down at a…
A: Write the given values with suitable variables. u=31 m/sa=-4.5 m/s2t=4 s Here, u denotes the car's…
Q: When jumping, a flea reaches a takeoff speed of 1.0 m/s over a distance of 0.50 mm. What is the…
A: We have to determine the flea's acceleration during the jump phase. We are aware that the flea…
Q: A car traveling with an initial velocity of 16 m/s accelerates at a constant rate of 2.8m/s2 for a…
A: The given data are: u=16 m/sa=2.8 m/s2t=3 s Here, u denotes the initial velocity, a denotes the…
Q: A plane accelerates from 2 m/s at the rate of 3 m/s2 over a 530 m distance. How long does it take…
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Q: A sprinter starts from rest and accelerates to her maximum speed of 9.7 m / s in a distance of 9.7…
A: The initial speed of the sprinter is 0 m/s.The maximum speed of the sprinter is 9.7 m/s after…
Q: An electric vehicle starts from rest and accelerates at a rate of 1.8 m/s2 in a straight line until…
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Q: What is the initial velocity of a Jeep uniformly accelerated at a rate of 0.2m/s² so that it travels…
A: Solution: Given that a = 0.2 m/s2 s = 0.75 km = 750 m t = 50 s
Q: Starting with a constant velocity of 45 km/h, a car accelerates for 30 seconds at an acceleration of…
A: Given initial velocity of car u=45 km/hr acceleration of car a=1 m/s time of travel t=30…
Q: A car accelerates from a stop light at 3M/S2 until it is traveling at a velocity of 15M/S? At that…
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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: On a straight road, a car speeds up at a constant rate from rest to 20 m/s over a 5 second interval…
A: Given data: Initial speed of car is, u=0 m/s (Because car starts from…
Q: bird, accelerating from rest at a constant rate, experiences a displacement of 6.9 m in 1.1 s. hat…
A: Given value--- initial velocity = 0 m/s. displacement = 6.9 m. time = 1.1 m. We have to find---…
Q: A ball is thrown upward and passes a powerline that is 15 ft off the ground at times 0.5 s on the…
A: Given: The height of the ball thrown upwards=15ft=4.5m time on the way up t1=0.5s time on the way…
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- A car decreases its forward velocity uniformly from 42m/s to 8m/s while traveling distance of 200m. What is acceleration during this time?At time t = 0, a car moving along a straight line has a velocity of 16 m/s. It slows down with an acceleration given by -0.50t, in m/s for t in seconds. It stops at t = O 64 s O 32 s 16 s O 8sThe car then slows to 63 ft/s (43 mi/h) in 3.5 s. What is the average acceleration for this time period?
- Highway safety engineers design "soft" crash barriers so that cars hitting them will slow down at a safe rate. A person wearing a safety belt can withstand a deceleration rate of 300 m/s2. How thick should barriers be to safely stop a car that hits the barrier at 110 km/h and then slows to a stop as it crashes through and destroys the barrier?The crossing guard holds up her stop sign, and the driver is paying attention well. The car moves at a constant velocity of 11 m/s for 2.3 seconds while the driver reacts, then slows down at a constant rate of -4.5 m/s?. What is the stopping distance for the car in this situation?The driver of a sports car traveling at 10.0 m/s steps down hard on the accelerator for 5.0 s and the velocity increases to 30.0 m/s. What was the average acceleration of the car during the 5.0-s time interval?
- Consider a car moving in the positive direction with an initial velocity of 31 m/s slows down at a constant rate of -4.5 m/s2. What distance does the car cover in 4 seconds?A coin was tossed upward at an initial velocity of 5.0 m/s. Suppose the coin was caught after 0.60 s. At what distance from its starting point was it caught? How fast was the coin moving when it was caught?A hockey puck is sliding with an initial speed of 12 m/s and is decelerating at a rate of 0.50 m/s2. How far will it travel before it stops?
- A baseball has an acceleration of 0.5 m/s2. If it covered a distance of 10 m starting from rest, what is its velocity? How much time is needed for this change in velocity?An automobile accelerates from rest at 1 ft/s 2for 30 s, continues at constant speed for 2 min, and then comes to a stop in 15 s. What distance did it cover?