A train is travelling down a straight track at 20 m/s when the engineer applies its brakes, resulting in an acceleration of -1 m/s2 as long as the train is in motion. How far does the train move during a 40-s time interval starting at the instant the brakes are applied?
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A: Given data: Initial velocity, u=15 m/s Final velocity, v=2×15 =30 m/s Acceleration, a=3 ms2
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A: Given value--- car starts from rest and travels for 8.5 s with a uniform acceleration of +2.5 m/s2.…
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A: Acceleration of the motorcycle, a=5 m/s2 The velocity at the time t=4 s is v=60 m/s
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A: Given data: Initial velocity (u) = 14.5 m/s Final velocity (v) = 0 m/s Acceleration (a) = -2.5 m/s2…
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A: Solution: as given u = 50 m/s a = - 5 m/s2 u =u - 20%(u) = 40 m/s
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A: The initial velocity of a ranger is, u=22 mi/hr=9.835 m/s The final velocity of a ranger is, v=0 m/s…
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A: Initially, speed of the car was, u = 30 m/s. The driver took t1 = 0.75 s to apply the brake Distance…
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A: Given data *The given maximum speed is vmax = 280 m/min = (280/60) m/s = 4.67 m/s *The final speed…
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A: Given that: The velocity of the car (v1)=54 mph Distance between truck and car (d)=0.65 mi The…
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Q: An electric vehicle starts from rest and accelerates at a rate of 1.7 m/s² in a straight line until…
A: Given:- An Electric vehicle starts from the rest and accelerates at a rate of a1 = 1.7 m/s2. The…
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- A car, initially at rest, accelerates at a constant rate, 3.36 m/s2 for 32.6 seconds in a straight line. At this time, the car decelerates at a constant rate of -2.00 m/s2, eventually coming to rest. How much distance (in meters) did the car travel during the deceleration portion of the trip?A person walks first at a constant speed of 4.90 m/s along a straight line from point to point and then back along the line from to m/s. (a) What is her average speed over the entire trip? m/s (b) What is her average velocity over the entire trip? m/s @ at a constant speed of 3.10A car starts from rest, then accelerates at a constant rate over a distance of 80 m. It then immediately decelerates at a constant rate over a distance of 136 m. The entire trip lasts a total duration of 26.0 s. What were the magnitudes of the cars accelerations for the speedup and slowdown stages respectively?
- 32. An object moves with constant acceleration 4.00 m/s² and over a time interval reaches a final velocity of 12.0 m/s. (a) If its original velocity is 6.00 m/s, what is its displacement during the time interval? (b) What is the distance it travels during this interval? (c) If its original velocity is -6.00 m/s, what is its dis- placement during this interval? (d) What is the total distance it travels during the interval in part (c)?A barge is being towed at 16 m/s when the towline breaks. It continues thereafter in a straight line but slows down at a rate proportional to the square root of its instantaneous velocity. If two minutes after the tow line breaks, the velocity is 9 m/s, how far does it move before coming to rest?An object has an initial velocity of 15 m/s. How long must it accelerate at a constant rate of 3 m/s2 before its final velocity is equal to twice its initial velocity?
- A particle moves along one dimension with a constant acceleration of 3.45 m/s2 over a time interval. At the end of this interval it has reached a velocity of 10.2 m/s. (a) If its original velocity is 5.10 m/s, what is its displacement (in m) during the time interval? m (b) What is the distance it travels (in m) during this interval? m (c) A second particle moves in one dimension, also with a constant acceleration of 3.45 m/s2 , but over some different time interval. Like the first particle, its velocity at the end of the interval is 10.2 m/s, but its initial velocity is −5.10 m/s. What is the displacement (in m) of the second particle over this interval? m (d) What is the total distance traveled (in m) by the second particle in part (c), during the interval in part (c)? mA commuter backs her car out of her garage with a constant acceleration of 1.60 m/s2. (For each answer, enter a number.) (a) How long in seconds does it take her to reach a speed of 2.00 m/s? (b) If she then brakes to a stop in 0.8 s, what is her (constant) deceleration in m/s2?The driver of a truck slams on the brakes when he sees a tree blocking the road. The truck slows down uniformly with an acceleration of -5.60 m/s2 for 4.20 s, making skid marks 62.4 m long that end at the tree. With what speed does the truck then strike the tree?