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In which of these situations would the average velocity vector
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- You travel from point A to point B in a car moving at a constant speed of 70 km/h. Then you travel the same distance from point B to another point C, moving at a constant speed of 90 km/h. Is your average speed for the entire trip from A to C 80 km/h? Explain why or why not.arrow_forwardInitially, a bicycle is at the position 7 = (130 m)i + (210 m)j. After 120 s, the position of the particle is 7 = (110 m)i + (240 m)j . What is the average velocity vector of the bicycle in that time || tinterval? O Tav = (0.17 m/s)i + (-0.25 m/s)j O Jay = (0.25 m/s)i + (-0.17 m/s) O Tay = (-0.25 m/s)î + (0.17 m/s) O Jay = (-0.17 m/s)i + (0.25 m/s)jarrow_forwardA receiver on a football team runs 8.0 m [E] and then turns abruptly to run 12.0 m [W]. If the entire motion takes 5.0 s, determine the receiver's:(a) total distance travelled.(b) total displacement.(b) average speed.(c) average velocity.arrow_forward
- A body moves from:position (1.0 m)i− (3.0 m)j where its velocity is (2.0 m/s)i+ (0.5 m/s)jto position (−1.0 m)i+ (1.0 m)j where its velocity is (4.0m/s)iExpress the body’s displacement (vector) delta r.Express the body’s change in velocity (vector) delta v.arrow_forwardA student runs for 20 s along a straight line, with a velocity v [m / s] given by: (photo) a) Describe its motion. b) At what time (s) does it have zero velocity? c) What is its average acceleration? A student runs for 20 s along a straight line, with a velocity v [m / s] given by: (photo) a) Describe its motion. b) At what time (s) does it have zero velocity? c) What is its average acceleration? d) What is its instantaneous acceleration at 5, 12 and 18 s? e) At what time (s) does it have maximum speed?arrow_forwardAn object moving with constant acceleration along a horizontal path covers the distancebetween two points 60 m apart in 6.0 s. Its speed as it passes the second point is 15 m/s.Find a) the speed at the first point, b)its acceleration and c) the distance from the pointwhere the object was at rest to the first point.arrow_forward
- (a) Can a particle moving with instantaneous speed 5.00 m/s on a path with radius of curvature 3.00 m have an acceleration of magnitude 11.00 m/s²? O Yes O No If the answer is yes, explain how it can happen; if the answer is no, explain why not. This answer has not been graded yet. (b) Can it have an acceleration of magnitude 7.00 m/s²? O Yes O No If the answer is yes, explain how it can happen; if the answer is no, explain why not. This answer has not been graded yet. Need Help? Submit Answer Read Itarrow_forwardA car starts from rest at position with speed increasing uniformly along the curved highway until reaching position 3 with a speed of v3, which the car maintains thereafter. Utilize the following values: (4) Calculate the total acceleration of the car (a) immediately after position 1, (b) exactly at position 2, (c) just before position 3, and (d) at position 4. r₁ = 30 m r3 = 43 m Ө (3) 113 e = 29° V3 = 78 kph (1 1arrow_forwardAn object moves in a plane from position r1=(-1,-2) m to the position r2=(-2,7 m and then to r3=(3,8)m. The time of the motion is t=30s. Find (a) total displacement; (b) distance between the initial and final positions; (c)distance travelled (d)average velocity and average speedarrow_forward
- e.g. There is a ball is sinking in some 0 with = (10m-s¹), and acceleration a = (-1.0s¯¹)v} (1) How much time does it take before it is almost stop moving? (2) How long does it pass during this period? 37arrow_forwardhow much time would it take you to cover the61-m length of the walkway if, once you get on the walkway, youimmediately turn around and start walking in the opposite direction with a speed of 1.3 m>s relative to the walkway?arrow_forwardA particle initially located at the origin has an acceleration of a=3.00jm/s2 and an initial velocity of vi=5.00im/s. Find (a) the vector position of the particle at any time t, (b) the velocity of the particle at any time t, (c) the coordinates of the particle at t = 2.00 s, and (d) the speed of the particle at t = 2.00 s.arrow_forward
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