2.John drove South 90 km at 30 km/h and then East 120 km at 20 km/h. Determine a) the average speed for the whole journey? b) the magnitude of the average velocity for the whole journey?
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- 1.Leo traveled 25.0km from their house to a shopping mall to meet a friend .Upon reaching the mall,texted that he cannot come. Sadly,Leo went back home following the same path.(a)What was the total distance leo traveled?(b)what was his displacement?If the entire trip look Leo 0.75h,what were his (c) average speed and(d) average velocity?complete solution 1. What is the magnitude of the displacement of a car that travels 7.6 mi east and then 8.9 mi north? One mile is 1609.34 meters. 2. A car that travels at 8.9 km/hr for 2.0 hrs, at 3.6 km/hr for 1.0 hr and at 2 km/hr for half an hour. What is its average speed? 3. If the ball was kicked from ground gaining a velocity of 87 m/s at 5.9 degrees from the horizontal. Find the velocity of the ball when it reached maximum height. Select one: a. 86.5391 m/s b. 8.9430 m/s c. 9.81 m/s d. 0 m/s 4. In a construction site, a heavy hollow block falls down from a height of 63m above the ground. Unfortunately, there is a man 6ft height tall right below the incident. As to what maximum time should the man react as to safely move away from the falling block?1m = 3.2808ft 5. A hiker goes 6 km, 67 degrees east of north then changes direction and goes 5 km, 34 degrees west of north. How far is he from the starting point?1. Lean and Mickey who are 150 m apart start walking toward each other at 3 mis ad 5 mís, respectively. (a) how long will it take them to meet? (b) Find the corresponding distance traveled by each. 2 A car accelerates along a straight road from rest to +60.0 km/h in 5.00 s. What is the magnitude of its average acceleration? 3. A cheetah can accelerate from rest to a speed of 30.0 mis in 7.00 s. What is its acceleration?
- 94 in x 114 in (24 cm x 29 cm) with Prongs EAR -rocket Portfolio Stenes, inc Distributed 3. A ball is thrown straight up with an initial velocity of 128 ft/sec., so that its height 844106 031076 (in feet) after t seconds is given by s(1) = -16t2 +128 A. What is the average velocity of the ball over the time intervals? a. [2, 3] b. [2, 2.5] c. [2. 2.1] B. What is the instantaneous velocity at time t 2? C. What is the instantaneous velocity at time t-5? Is the ball rising or falling? D. When will the ball hit the ground? An object is dropped from a certain height. It is known that it will fall a distance s, in1. An airplane accelerates down a runway at 3.20m/s² for 32.8s until it finally lifts off the ground. Determine the distance traveled before takeoff. 2. What is the average velocity for an object if it travels 24.46m in 18.75s?2. A particle has an initial speed of 44 ft/s. If it experiences a deceleration of a = 31 -8 ft/s, where t is in seconds, determine its velocity, after it has traveled 15 ft. Also, how much time does this take?
- 1. A car is moving at uniform acceleration. Its velocity after traveling for 2 seconds is 4m/sand is found 12 meters from where it started. If the car’s velocity at 5 seconds is 10 m/s,determine (a) the car’s acceleration, (b) its displacement at t = 5 seconds measuredfrom its starting point and (c) its velocity at the start.7. A person takes a trip, driving with a-constant speed of s T km/h, except for a 22.0-min rest stop. If the person's age speed is 77.8 km/h, (a) how much time trip and (b) how far does the person travel? aver- spent on the1. A driver drove from Ibri University to Salalah University campus for 9 hours at an average speed of 110 km/h. If (1/3)rd of the distance was driven at 90 km/h, calculate i) the distance between these two campuses. ii) average speed for the remaining part of the journey.
- 8. GO An 18-year-old runner can complete a 10.0-km course with an average speed of 4.39 m/s. A 50-year-old runner can cover the same dis- tance with an average speed of 4.27 m/s. How much later (in seconds) should the younger runner start in order to finish the course at the same time as the older runner?1. One car travels due east at 40km/h and a second car travels north at 40km/h. Are their velocities equal? Explain.2. We are given the velocity funtion of mouing car Along an east-wed4 highung is V(4) = 3€²-24 where t- hours afterho and distance is measured east is the positive direction, in miles, Note that going A If st) is the position in miles from Norton Tewn Mall and at 1 pm the car was at Norton Town Hall, find S(4) B) What was the average velocity of the car from Zpm to 5 pm! Include units of measurementi ) Set up o formula involving either s(E) or the total distance trave lled by the objét from Ipm to tpm? Answer simpligye v(t) that gves must have s" er v's in it. Do not