A spacecraft starts from rest, and makes a journey to a destination 252000 km from its starting point. It does so by accelerating at a constant rate of 6.93 m/s^2 up to the midpoint of the journey, and then decelerates at the same constant rate of 6.93 m/s^2 for the second half of the journey, ending at rest. How long did the entire journey take? 1 2 hr 22 min 2 10 hr 6 min 3 5 hr 3 min 4 3 hr 21 min

A race car moves such that its position fits the relationship x-(4.5 m/s)t + (0.80 m/s³³ where x is measured in meters and in seconds. (a) A plot of the car's position versus time is which of the following? برسا 100- O x(m) 90 80 70 60 30 30 20 10 O x(m) 240 220 200 180 160 140 1201 100 80 60 200 180 160 140 120 EL 100 80 40 20 t(s) 40 1.00 2.00 20 t(s) 3.00 4.00 5.00 6.00 1.00 2.00 3.00 4.00 5.00 x(m) 6.00 30 25 20 15 10 5 x(m) t(s) 1.00 2.00 3.00 4.00 5.00 6.00 220 t(s) 1.00 2.00 3.00 4.00 5.00 6.00 (b) Determine the instantaneous velocity of the car at t-4.4 s, using time intervals of 0.40 s, 0.20 s, and 0.10 s. (In order to better see the limiting process keep at least three decimal places in your answer.) At-0.40 s m/s (Use the interval from t-4.20 sto 4.60 s.) At -0.20 s m/s (Use the interval from t-4.30 sto 4.50 s.) At - 0.10 s m/s (Use the interval from t-4.35 sto 4.45 s.) (c) Compare the average velocity during the first 4.4 s with the results of part (b). The average velocity…

An unidentified flying object (UFO) is observed to travel a total distance of 49000 m, starting and ending at rest, over a duration of 3.07 s. Assuming the UFO accelerated at a constant rate to the midpoint of its journey and then decelerated at a constant rate the rest of the way, what was the magnitude of its acceleration? Express your answer in g s , where 1 g = 9.81 m/s^2.     20,796 g s     10,398 g s     2,120 g s     1,060 g s

OK, yet another strange awakening in a room with no windows. This time you drop a ball from a height of 1.67 m and it hits the floor 0.292 s after you drop it. This time you suspect you are on a rocket that has just left the surface of the Earth, and is still not too far above the ground. What do you deduce the rocket s acceleration to be? 1 58.8 m/s^2 29.4 m/s^2 3 49.0 m/s^2 4 39.2 m/s^2

A muon (an elementary particle) enters a region with a speed of 5.45 x 106 m/s and then is slowed at the rate of 1.30 x 1014 m/s². (a) How far does the muon take to stop? m (b) Graph x versus t for the muon. x (m) 0.12 0.10 0.08 0.06 0.04 0.02 O 0.12 0.10 0.08 0.06 0.04 0.02 O x (m) Graph v versus t for the muon. v (m/s) 6x106 5x10 4x10 3x106 2x106 O 1x106 10 v (m/s) 6x10 5x10 4x106 3x106 2x106 1x106 10 Enter a number. Additional Materials 10 20 10 20 20 30 20 30 6x 10p 5x10 LL 4x106 3x10 2x10 1x106 t (ns) 30 40 30 40 40 t (ns) 40 t (ns) t (ns) O x (m) 0.12 0.10 0.08 0.06 0.04 0.02 O x (m) 0.12 0.10 0.08 0.06 0.04 0.02 v (m/s) v (m/s) 6x10 5x10 4x106 3x106 2x106 1x106 10 10 10 20 10 20 20 30 20 30 30 30 -t (ns) 40 40 40 40 t (ns) t (ns) t (ns)

at an instant in time a particles velocity is v = (2.00i + 1.00j) m/s, while it’s acceleration is a = -1.00i m/s^2. at what rate is the particle speeding up / slowing down and what’s the radius of the curve on the particles trajectory

The SpaceX Falcon 9 Launch vehicle is launched straight up at a constant acceleration of 8 m/s?. At 10 seconds after liftoff, a bolt falls off the side of the Falcon 9. How much time later does the bolt hit the ground? 10 s 33 s 17 s 48 s 24 s 20 s O O O O

Part (a)  What is the velocity, in meters per second, of the particle at the time t1 = 3.0 s?  v(t) = ______ m/s Part (b)  What is the velocity, in meters per second, of the particle when it is at the origin (x = 0) at time t0 > 0? v(t0) = ______ m/s

A spacecraft starts from rest, and makes a journey to a destination 389000 km from its starting point. It does so by accelerating at a constant rate of 9.79 m/s^2 up to the midpoint of the journey, and then decelerates at the same constant rate of 9.79 m/s^2 for the second half of the journey, ending at rest. How long did the entire journey take?     11 hr 2 min     5 hr 31 min     3 hr 30 min     2 hr 29 min

An unidentified flying object (UFO) is observed to travel a total distance of 42000 m, starting and ending at rest, over a duration of 2.07 s. Assuming the UFO accelerated at a constant rate to the midpoint of its journey and then decelerated at a constant rate the rest of the way, what was the magnitude of its acceleration? Express your answer in g s , where 1 g = 9.81 m/s^2.     39,207 g s     19,604 g s     3,997 g s     1,998 g s