27. Starting at time t = 0, an object moves along a straight line with velocity in m/s given by v(t) = 98 – 2t², where t is in seconds. When it momentarily stops its acceleration is: А. О B. -4.0 m/s? C. -9.8 m/s² D. -28 m/s² E. 49 m/s² ans: D

Q: 1. The figure shows a graph of the velocity of an object as a function of time. Velocity (m/s) 20 10…

A:

Q: A swan on a lake becomes airborne by flapping its wings and running on top of the water. If the swan…

A: Given data:  Initial velocity (V0) = 0 m/s Final velocity (V) = 6.50 m/s Acceleration (a) = 0.350…

Q: Which equation should you use to solve this problem? (Don't solve it, just pick the right equation.)…

A: Given data:  Initial velocity (vi) = 27.7 m/s Final velocity (vf ) = 10.9 m/s Time (t) = 2.37 s…

Q: A runner hopes to complete the 10,000 – m run in less than 30.0 min. After exactly 28.0 min, there…

A: Given data: The total distance is d=10000 m. The time passed is t=28 min. The distance left is…

Q: •28 On a dry road, a car with good tires may be able to brake with a constant deceleration of 4.92…

A: Initial velocity of the car,

Q: 3. A race car's velocity increases from 4m/s to 36 m/s over a 4.0 s interval. (a) What is its…

A: Given: The intial velocity of the car is 4 m/s. The final velocity of the car is 36 m/s. The time…

Q: 5. A plane accelerates from 2 m/s at the rate of 3 m/s? over a 530 m distance,4 a) How long does it…

A: Given:- The velocity v = 2 m/s  The acceleration a = 3 m/s2  The distance d = 530 m  Find:- a) How…

Q: Enter an expression, in terms of defined quantities, for the car's speed just before the driver…

A: The constant acceleration af=1.51 m/s Time t1=20 sec

Q: A drag racer starts from rest and accelerates at 3.9 m/s² for the entire distance of 3.5 * 10º m.…

A: Part-I: Given: The intial velocity of the drag racer is 0 m/s. The acceleration is 3.9 m/s2. The…

Q: 2. A car starts from rest and accelerates to 8 m.s in 5 seconds. It maintains its speed for 2…

A:

Q: 2. An object, initially at rest, moves with a constant acceleration of 10 m/s2. How far will it…

A: The given data are: u=0 m/sa=10 m/s2 Here, u denotes the initial velocity and a denotes the…

Q: 8. Using this graph, which is a speed-time graph, answer the following questions: 40- 30- 20- 10 of…

A:

Q: 1. A car accelerates from 12 m/s to 25 m/s in 6.0 s. What is the cars' acceleration? How far did it…

A: 1) Using equation of motion V = U + at where V is the final speed U is the initial speed a is the…

Q: Question 9 Starting from rest, a boat increases its speed to 4.92 m/s with constant acceleration.…

A:

Q: 4) Plot the velocity-time graph that corresponds to the data given in Table 1 below, and determine…

A: 4)  given a table of time and velocity here we have to find the average acceleration  average…

Q: A fireworks shell is accelerated from rest to a velocity of 58.0 m/s over a distance of 0.280 m. (a)…

A:

Q: 4. A model rocket is launched straight upward with an initial speed of 40.0 m/s. It accelerates with…

A:

Q: Suppose a rocket ship in deep space moves with constant acceleration equal to 9.8 m/s2, which gives…

A: Given : a = 9.8 m/s2 vi = 0 m/s vf = 0.25(3.0 x 108) = 7.5 x 107 m/s

Q: A motorcycle has a constant acceleration of 4.05 m/s2. Both the velocity and acceleration of the…

A:

Q: 28. An auto manufacturer boasts that its newest sports car model "goes from 0 to 60 (mi/h) in 5.00…

A:

Q: 3. A fighter jet lands on the flight deck of an aircraft carrier. The jet must reduce its speed from…

A: Given, Initial velocity vi= 153m/s Final velocity vf= 0m/s Time taken t= 2s We know that,…

Q: E15. A car moving with an initial velocity of 32 m/s slows down at a constant rate of -4 m/s². a.…

A:

Q: A sports car starts from rest at an intersection and accelerates toward the east on a straight road…

A:

Q: 1. A roller coaster car rapidly picks up speed as it rolls down a slope. As it starts down the…

A: Since you have asked multiple questions, we will solve the first one for you. In case you need an…

Q: 26. GO A VW Beetle goes from 0 to 60.0 mi/h with an acceleration of +2.35 m/s². (a) How much time…

A:

Q: 11. From the velocity-time graph below, describe the motion of an object in segments P, Q, R and S.…

A:

Q: an object with an average velocity of 45 m/s to travel 8

A: The velocity of the object is v = 45 m/s  The distance travel by the object is d = 825 m  Find:-…

Q: 17. An object falls from a high building. Ignoring air resistance, what will its velocity be after 6…

A: When an object freely fall from the top of the building than the initial velocity of the object…

Q: 1. Rushin is waiting at a stoplight. When it finally turns green, Rushin accelerated from rest at a…

A: Given : vo = 0 because initially Rushin was at rest a = 2 m/s2 t = 15 seconds

Q: A motorist drives north for 35.0 minutes at 85.0 km/h andthen stops for 15.0 minutes. He then…

A: Given,Initial speed = 85km/hInitial time = 35 minDistance travelled after stopping = 130km

Q: 5. A car accelerates constantly from an initial speed of 20 miles per hour to 60 miles per hour at a…

A: Given: The initial speed of the car is 20 mi/h. The final speed of the car is 60 mi/h. The…

Q: A cheetah can accelerate from rest to a speed of 30.0 m/s in 7.00 s. What is it's acceleration?

A: Hai, since there are multiple questions posted, we will answer the first question. The acceleration…

Q: v (m/s) 3- In the shown figure, what is the magnitude of acceleration at s = 1.75 m? v = -2s + 4 a)…

A: As velocity is the rate of change of displacement with respect to time. Acceleration is the rate of…

Q: A skater increases her velocity from 4.3 m/s to 11.5 m/s in 5 seconds. What is the skater's…

A:

Q: 4.) The following graph shows the position -vs- time for a car. position (m) 80 60 40 20 - 20 - 40…

A: In the position-time graph, the instantaneous velocity at a time is given by the slope of the graph…

Q: A commuter backs her car out of her garage with a constant acceleration of 1.60 m/s². (For each…

A: Given data:  Initial velocity (u) = 0 m/s Acceleration (a) = 1.60 m/s2 Final velocity (v) = 2.00 m/s…

Q: At the end of a race a runner decelerates from a velocity of 9.00 m/s at a rate of 0.400 m/s?. (a)…

A:

Q: utomobile accelerates at a constant rate of 15 mi/hr to 45 mi/hr in 15 seconds, while travelling in…

A: Givenv1=15 mi/hrv2=45 mi/hrt=15 s

Q: Victor is driving south. He is travelling at 12 m/s, when he enters an area with a new speed limit.…

A: 1.

Q: 40. A commuter backs her car out of her garage with an acceleration of 1.40 m/s2. (a) How long does…

A:

Q: Abante Atras.The figure to the right shows the veloc- ity versus time graph of a rocket. What is the…

A: The average acceleration (aav) of a body or an object is defined as the change of velocity of the…

Q: 5. A stone is thrown vertically downwards with a velocity of 10 m./sec. , and gravity produces on it…

A:

Q: 7. Sketch a velocity-time graph for Donna's Mercedes which accelerated uniformly for 0 mi /hr to 70.…

A: QUE . 7(a) GIVEN:      Intial velocity = u = 0 mi/hr                    Final velocity = v = 70…

Q: 79. D mmh A cheetah is hunting. Its prey runs for 3.0 s at a constant velocity of +9.0 m/s. Starting…

A: The acceleration of the Cheetah can be calculated using following steps. Prey runs for 3.0 s at…

Q: (I) A sprinter accelerates from rest to 9.00 m/s in 1.38 s. What is her acceleration in (a) m/s2;…

A: The expression for the acceleration is given as a=v-ut