why does the displacement become zero just as a horse crosses the finish line . b) why is the average velocity zero just as a horse crosses the finish line
Q: A group of hikers walks 2.0 km North and then 4.0 km West. The entire hike takes 4.0 h. (a) Draw…
A: Given data: Displacement (d1) = 2.0 km, North Displacement (d2) = 4.0 km, West Total time (t) = 4.0…
Q: ball is thrown straight up with an initial speed of 14.3 m/s. At what height above its initial…
A:
Q: A distance of 60 meters separates two jetskis at Virginia Beach. Starting at rest, the jetskis…
A: Distance between the jet skis, D = 60 m As both jet skis start from the rest and accelerate at a…
Q: g) Q: Which object is accelerating faster? A or B? B A h) Q: Which object is slowing down? A, B, or…
A: The acceleration of the particle is given by Where v = velocity of the particle
Q: Consider two objects that are thrown upwards at an angle (0 = 35°) above the horizontal. Object 1 is…
A: Given: Projection angle θ=35o Initial velocity of object 1 v1 = 10 m/s. Initial velocity of object 2…
Q: Under what circumstances does distance traveled equal magnitude of displacement? What is the only…
A: Distance and displacement
Q: A ball is thrown vertically upward with an initial velocity of 10 m/s from the top of a building of…
A:
Q: An electric vehicle starts from rest and accelerates at a rate of 4 m/s2 in a straight line until it…
A: An electric vehicle starts from rest and accelerates at a rate of 4 m/s2 in a straight line until it…
Q: A pumpkin is shot from ground level with an initial velocity of 120 m/s at an angle of 30° above the…
A: As the pumpkin is launched at an angle with the horizontal, the pumpkin will follow a projectile…
Q: d) What is the car’s velocity in interval B? e) What is the car’s average velocity during the…
A: In a position-time graph, the slope of the graph gives the velocity of the object associated.
Q: A motorcycle is stopped at a traffic light. When the light turns green, the motorcycle accelerates…
A:
Q: A runner’s velocity and acceleration are in the same direction. What can you say about the runner’s…
A: Speed of runner's increase. If velocity and acceleration has same sign than speed increases If…
Q: A car ride consists of two segments. During segment A the car starts from rest, has an acceleration…
A: Equation of motions V=u+at S=ut+1/2at2 v2 = u2 +2aS
Q: < Which of the following best compares average speed with average velocity? 2 A Average speed is…
A:
Q: Problem 1: Near the end of a foot race, the front two runners are separated by a distance of 45 m.…
A: The velocity of the first runner, the velocity of the second runner, Distance between the first two…
Q: Consider a grey squirrel falling from a tree to the ground. Use a coordinate system in which…
A: The squirrel starts its fall from a height of 1.3 m above the ground. This squirrel falls under the…
Q: A baseball is hit so that it travels straight upward after being struck by the bat. A fan observes…
A:
Q: If we apply the above equations to the case of an object that does not change its direction of…
A: Vector quantities are those physical quantities which have both magnitude and direction. If both…
Q: A jogger jogs from one end to the other of a straight track in 1.08 min and then back to the…
A:
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- (A A person walks first at a constant speed of 4.80 m/s along a straight line from point to point and then back along the line from B to A at a constant speed of 3.05 m/s What is her average velocity over the entire trip? B m/sA scooter has a constant acceleration of +4.0 /s. Find its displacement after 2.0 s, if the initial velocity of the boat is +8.0 m/s. a) 42 m; b) 28 m; c) 24 m; d) 14 m.(a) Give two differences between average speed and average velocity. (b) For an object that undergoes some motion starting at one point and ending at different point, what does the average value of the speed (or velocity) tell you about the motion of the object on this trip and what does the instantaneous value of speed (or velocity) tell you about the motion of the object on this trip? (c) On a position versus time graph how do you determine the average velocity and the instantaneous velocity? (d) Illustrate your answer to (c) with a position versus time graph. (e) Why is the instantaneous speed always the magnitude of the instantaneous velocity?
- A ball is thrown straight up with an initial speed of 15.5 m/s. At what height above its initial position will the ball have one‑half its initial speed? height: mBasic-Physics7) A cyclist moves at 11.0 m/s for 1.00 min and at 16.0 m/s for 2.00 min. Find the average velocity if the second part of the motion is (a) in the same direction as the first (hint, the answer is not 13.5 m/s), and (b) in the opposite direction.
- 2A) starts from rest and accelerates continuously at a rate of 4.14 m/s² when the rocket is lit, what is the velocity (both magnitude and direction) of the toy car when it reaches the edge of the cliff? Suppose you place your toy car on flat ground 7.30 m away from a tall cliff. If your toy carAn object moving with uniform acceleration has velocity +12m/s in the positive x direction when itsx coordinate is 3 m. If its x coordinate 2s later is -5 m. What is its acceleration (in m/s y? A) -16 B) -18 C) -10 D) -8A record of travel along a straight path is as follows: 1. Start from rest with constant acceleration of 2.05 m/s² for 16.0 s. 2. Maintain a constant velocity for the next 1.80 min. 3. Apply a constant negative acceleration of -9.25 m/s² for 3.55 s. (a) What was the total displacement for the trip? m (b) What were the average speeds for legs 1, 2, and 3 of the trip, as well as for the complete trip? leg 1 m/s leg 2 leg 3 complete trip m/s m/s m/s