A helicopter starts from rest at point A and travels along the indicated path with a constant acceleration a. If the helicopter has a speed of 77 m/s when it reaches B, determine the values of R. 0, and p as measured by the radar tracking device at O at the instant when h= 95 m. B. 1220 m U, a 560 m 480 m
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- David is driving at a steady 30 m/s when he passes Linda, who is sitting in her car at rest. Linda then begins to accelerate at a steady 2 m/s^2. At the instant, David passes her. a. How far does Linda drive before passing David? B. What is her speed as she passes him?3. The car passes point A with a speed of 20 m/s after which its speed is defined by v= (20 – 0.20s) m/s. Determine the magnitude of the car's acceleration when it reaches point B, where s = 51.5 m and x = 50 m. dv Recall: dt dv ds y 1 y = 16 – 625 В S 16 mDriving down the road at a speed of 23.9 m/s, you suddenly notice a fallen tree blocking the road a distance of 82.0 m ahead of you. You step on the brake pedal and decelerate at a constant rate. What must the magnitude of your acceleration be so that you will come to a stop 6.6 m in front of the tree? a. 3.79 m/s^2 b. 3.48 m/s^2 c. 3.22 m/s^2 d. 7.58 m/s^2
- A car traveling 56.0 km/h is 23.0 m from a barrier when the driver slams on the brakes. The car hits the barrier 2.05 s later. a) What is the magnitude of the car's constant acceleration before impact? b) How fast is the car traveling at impact?A cyclist rides down a long straight road at a velocity (in m/min) given by v(t) = 400 - 20t, for 0≤t≤ 10. a. How far does the cyclist travel in the first 3 min? b. How far does the cyclist travel in the first 10 min? c. How far has the cyclist traveled when his velocity is 350 m/min?fast plz
- More people end up in U.S. emergency rooms because of fall-related injuries than from any other cause. At what speed v would someone hit the ground who accidentally steps off the top rung of a 4.0 m tall stepladder? a. 8.9 m/s b. 7.1 m/s c. 6.2 m/s d. 8.0 m/s e. 9.8 m/s A spring gun launches a heavy steel marble with an initial speed of 19.6 m/s. How long will the steel marble be in the air? a. 6.0 s b. 2.0 s c. 3.0 s d. 5.0 s e. 4.0 s A car is traveling in a straight line along a straight, level road at 15.0 m/s when it uniformly accelerates at 3.00 m/s2 for a time of 6.00 s. How far does the car travel in this time? a. 90 m b. 54 m c. 126 m d. 162 m e. 144 m2. A jet plane has a takeoff speed of vtakeoff = 73 m/s and can move along the runway at an average acceleration of 2.4 m/s2. The runway is 1.2 km. Write out the 3 Kinetic equations. a. b. Write out the values of initial position, initial velocity, and acceleration. How many seconds will it take for the plane to reach takeoff speed? с. d. How far will the plane have to travel to get to takeoff speed? will the plane be able to get to take off before it gets to the end of the runway? е.You are driving down a straight road at night in your McLaren MCL34 Formula 1 racecar at an entirely illegal speed of 98 m/s when Bambi and Thumper jump onto the road in front of you. Because you were texting while driving (also illegal), your reaction time is a rather slow; 1.3 seconds before your foot touches the brake. How far did you travel during this time? O a. 98 m O b. 127 m O c. 101 m O d. 134 m O e. 112 m Clear my choice
- ng A woman is on a train leaving the station at 3.0 m/s, while a friend waving goodbye runs alongside the car she's in. Call the train's direction of motion the + direction. ▼ Part B Once the train has reached a speed of 10 m/s, how fast must the woman walk, and in which direction, to keep up with her friend? Express your answer with the appropriate units. VIw= Submit μÀ Value 3 @ m S O Previous Answers Request Answer Review ?A police car accelerates at a constant rate of 4.0 m/s2 from rest. Match the answers with questions. v its velocity when t = 1.0 s A. 18 m its velocity when t = 2.0 s B. 8.0 m/s v its velocity when t = 3.0 s C. 2.0 m its displacement from t= 0 to t= 1.0 s D. 4.0 m v its displacement from t = 0 to t = 2.0 s E. 12 m/s v its displacement from t = 0 to t = 3.0 s F. 4.0 m/s G. 6.0 m/s H. 8.0 m I. 12 m9. A car with its brakes applied has an acceleration of -1.2 m/s˄2. If its initial velocity is 10 m/s, the distance the car covers in the first 5 seconds after the acceleration begins is A. 15 m B. 32 m C. 35 m D. 47 m 12. A train starting at 30 km/h travels a distance of 21 km in 18 min. Determine the acceleration of the train at this instant. A. 0.0865 m/s˄2 B. 0.0206 m/s˄2 C. 0.3820 m/s˄2 D. 0.0043 m/s˄2 13A stone is dropped from a cliff. After it has fallen 30 m, the magnitude of its velocity is approximately A. 17 m/s B. 24 m/s C. 44 m/s D. 588 m/s Answer the following, i only need the letter of correct answer.