2. Through what distance will body A move in changing its velocity from 1.8 m/sec to 3.6 m/sec? 1000N Va Va2 1500N
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- 30 25 20 d 15 (m), 6. 10 12 t (sec) What is the total displacement of the car during the first 10 seconds? a. 35 m b. 2 m O c. 0.5 m Od. 3.5 m O e. 5 m6. A futsal player leaves the bench and runs 5.0 m [N] and then 4.0 m [W] where she stops after 9 seconds. Gi a. what is the total distance traveled b. what is the displacement of the player c. what is her average speed d. what is her average velocityAn automobile with an initial speed of 20 m/s accelerates at a rate of 5 m/s2. Use one of your kinematic equations and find how fast the car is moving after accelerating for 3 seconds. a. 15 m/s. b. 225.5 m/s. c. 35 m/s. d. 400 m/s.
- 15. Hello, Can you please help me with the next problem? 15. Two friends talk on the phone to meet,both come out at the same time in their respective bicycles; one of them with a speed of 25 km/h and the other with a speed of 30 Km/h. If the distance that initially separates them is 120 km:1. How far are they from each other's house?2. How long after dating do they meet? Thank you in advance!An object moves along the xy-plane. At some instant, its velocity and acceleration are - (3 m/s) } , ā = (0.5 m/s²) î – (0.2 m/s²) j. At this instant, the object is 7. = A. speeding up and following a curved path. B. speeding up and moving in a straight line. C. slowing down and following a curved path. D. slowing down and moving in a straight line. E. none of these.25. An object has increasing velocity when its acceleration is greater than zero. It has increasing speed when its velocity and acceleration have the same sign. For what times is: a. the velocity of the ball increasing? b. The speed of the ball increasing?
- +6. K13Q6 - 7. K13Q7 A sports car traveling at 29.5 m/s slows to a velocity of 11.0 m/s over 11.1 s. How far does it move during this time? X Distance 430.08 m Info1. The acceleration of a car is given by a(t) = A – Bt + Ct² , where A = 1.0 m/s², B = 0.5 m/s³, C = 2.0 m/s“. The car is at rest at the origin at time t= 0. Find its position and velocity as a function of time. b. Sketch its position, velocity, and acceleration. a.2. 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.
- The Hint The position of a particle moving along the x axis is given by x = (21 +22t+8t²) m, where t is in s. What is the instantaneous velocity of the particle at t= 5.0 s ? a. b. C. e. f. 10.2m/s -2.0 m/s -82.0m/s 331 m/s 102m/s -6.0 m/s9. 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.Which of the following are examples of velocities? a. +54 m/s. b. 60 miles/hour. c. 70 miles/hr northeast. d. -100 m/s. e. 20 knots. f. a, c, d. g. b, e.