02_Worksheet_Motion

A bee flies from a petunia to a marigold at an average speed of 3 feet per second. Immediately upon reaching the marigold the bee turns around and flies back to the petunia at an average speed of 6 feet per second, following his original path. What was the bee’s average speed for the round trip?   a. 3 feet per second     b. 4 feet per second     c. 6 feet per second     d. 4.5 feet per second

KINEMATICS 1. A student measures the speed of a trolley. At one instant, the speed of the trolley is 1.0 m/s and two seconds later the speed is 4.0 m/s. What is the acceleration of the trolley? A. 1.5 m/s2 B. 2.0 m/s2 C. 2.5 m/s2 D. 5.0 m/s2   2. A car driver takes a total two hours to make a journey of 75 km. She has a coffee break of half an hour and spends a quarter of an hour stationary in a traffic jam.  At what average speed must she travel during the rest of the time if she wants to complete the journey in the two hours? A. 38 km/h B. 50 km/h C. 60 km/h D. 75 km/h

b. You rode a roller coaster with a total path length of 250 meters. After 3 rides, how much is your displacement? c. A paraglider started to descent in his wingsuit. Knowing that air resistance will be significant to make the paraglider to be safe, which of the following will happen to its acceleration and velocity vectors? d. A car moving at 100 km/hr along a straight road suddenly hit the brakes. Which of the following is true about the acceleration and velocity vectors? e. What is the acceleration of a car started from rest, and moved at 10 m/s for 10 s?

#2 Distance vs. Time Graph (w) p 60 E 40 20 a 0 0 b 10 20 30 40 50 60 t (s) 5. How far does the object travel from B to C? 6. How far does the object travel from D to G? 7. What is the velocity of the object from C to D? 8. What is the velocity of the object from F to G? 70 1. In what section is the object accelerating? 2. In what section is the object standing still? 3. In what section is the object Decelerating? 4. In what section is the object moving backwards?

1) Pheromone is a substance emitted by ants while they travel so that others may be able to follow exactly the same direction as the others took. If a zoologist is to measure the distance the ant travels and in what particular direction does it take, how would this quantity be classified? A. Equilibriant B. Magnitude C. Scalar D. Vector   2) Which of the following statements regarding vectors and scalars is INCORRECT?   A. A scalar quantity may be either positive or negative. B. A vector that is zero may have components other than zero. C. It is possible to use vector components that are not perpendicular. D. Two vectors are equal only if they have the same magnitude and direction.

Answer the following questions. (True or False)     a. Motion and acceleration are not the same quantity.    b. The speed of an accelerated body changes with time.    c.  A body can be accelerating even when it is not moving.    d.  The velocity of an accelerated body changes with time.    e.  The acceleration of a body with zero speed is zero.

DYNAMICS 1. What types of motion explains when a vehicle is traveling along a straight line with a given velocity with respect totime. It is simply define as the distance travelled by a particle moving along the line in the negative or positivedirection.2. This defined as the quotient of the displacement Δx and the time interval Δt.3. This term is sometimes used to refer to “a” when the speed of the decreases; the particle is then moving more slowly.

I need help with this question and I need an explanation Is the answer : A. 60 m/s B. 20 m/s C. 10 m/s

4. A jogger warms up by running 350 meters east at an average speed of 3.8 m/s, then running west 240 meters at an average speed of 4.2 m/s. a. How much time does the first part of the trip take? b. How much time does the second part of the trip take? c. How long does the entire trip take? d. What is the total distance for the entire trip? e. What is the magnitude of the jogger's displacement for the entire trip? f. What is the average speed for the entire trip? g. What is the magnitude of the jogger's average velocity for the entire trip?

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Quèstion 1 A stone is dropped from top of a building that is 19.6 metres from the ground. Before the stone reaches the ground by one second, how far is it from the ground? (Take magnitude of g-9.8 m/s O A. 4.9 m O B. 2.5 m O. 19.8 m D. 9.9 m O E. 1.2 m A Moving to the next question prevents changes to this answer. DELL

1) Which of the following is NOT a scalar quantity?  A. 25 gram coffee B. 13.5 g/mL density of mercury C. 1 hectare of land D. 81 newtons weight on the moon 2) An astronaut needs to walk travel with two displacements with magnitudes 21 cm and 79 cm, respectively. Which of the following is the ONLY choice for the magnitude of the resultant? A. 0 cm B. 37 cm C. 82 cm D. 114 cm

2. The graph to the right shows the position vs. time graph for two objects (the solid line for object A and the dashed line for object B). a. Do the two objects ever have the same velocity? If so, at what time? How do you know? 8 6 4 2 0 x (m) B A 12 - 3 1 4 t(s)

Speed of a car The accompanying figure shows the time-to- distance graph for a sports car accelerating from a standstill. P 650 600 500 E 400 300 200 100 5 10 15 20 Elapsed time (sec) a. Estimate the slopes of secant lines PQ,, PQ2, PQ3, and PQ4, arranging them in order in a table like the one in Figure 2.6. What are the appropriate units for these slopes? b. Then estimate the car's speed at time t = 20 sec. Distance (m)

Kinematic Universe. Which of the following is/are ALWAYS TRUE? I. Displacement is a vector quantity that has a magnitude and direction that depends on the path taken. II. Average velocity is equal to instantaneous velocity when the acceleration is zero. II. Instantaneous velocity is the slope of the tangent line in the velocity vs. time graph. O Il only O I and Il only O I l only O I only

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The graph below shows the distance an object traveled over time. Distance Traveled by an Object 100 90 80 70 Y 60 50 40 30 W 20 10 0. 5 10 15 20 25 30 35 40 45 50 Time (s) Which line segment represents the time interval during which the object was moving at a positive constant speed? B. segment X A. segment W D. segment Z C. segment Y Distance (m)

1.A train covers 60 miles between 2pm to 4pm.How fast it was going at 3pm 2.A car is accelerating at 12 m/s2 finds it acceleration in km/hr2 3.Airlner reaches at a state speed at 163 miles/hr in 36.2 seconds.What is the magnitude average acceleration

1. Refer to the velocity-time graph of a jogger. The positive direction is away from the jogger's home. Rank the four distances for the time intervals, A, B, C, D in decreasing order. Explain your answer. 20 15 10 C A 0. 30 40 50 20 Time (s) 10 2. Sketch a velocity-time graph for the following motions: a) a city bus that is moving at constant velocity; b) a wheelbarrow that is slowing down at a constant rate of acceleration while moving in a negative direction Speed (m/s) 25

1. An object covered a certain distance in a given period of time. Which of the following quantity is used to describe the object’s motion?A. Acceleration B. Displacement C. Speed D. Velocity 2. As part of your healthy activity during the pandemic, your family conducted a fun walk inside your backyard after the morning exercise. How will you determine who is the fastest family member? A. Add the distance and the time. B. Subtract the distance from the given time. C. Multiply the distance and the time of travel. D. Divide the distance traveled with the given time. 3. Why is velocity considered a vector quantity? A. It is the rate of change in position of an object in a particular direction. B. It has magnitude only and do not consider the direction of motion. C. It describes the rate of change in speed of a body in a given direction. D. It tells how fast an object is moving.  4. Which of the following statements about speed and velocity is NOT TRUE?A. The unit of speed and velocity are…

A fish swimming at a constant speed of 0.5 m/s suddenly notices a shark appear behind it. Five seconds later, the fish is swimming in the same direction at a speed of 2.5 m/s. What is the can you conclude about the fish’s motion? a. The fish is accelerating. b. The fish is decelerating. c. The fish's velocity is constant. d. Cannot be determined.

If the velocity is constant towards the right direction, the graph of displacement x vs time t is a A. line with a positive slope. B. line with negative slope. C. parabola in the first quadrant. O D. parabola in the 4th quadrant. An object is moving towards the right direction. Velocity is constant. The graph of velocity vs time t is a line O A. along the t axis B. parallel to the t axis C. parallel to the v axis. O D. with nonzero slope. Velocity of a moving object is towards the right. Velocity is constant. The graph of acceleration a vs time t is a A. line parallel to the acceleration a axis. B. line along the acceleration a axis. C. line along the t-axis. OD.line with positive slope.

Arvin the Ant is on a picnic table. He travels 30 cm eastward, then 25 cm northward, and finally 15 cm westward. What is the magnitude of Arvin’s net displacement? a.70 cm b.57 cm c.52 cm d.29 cm

A car accelerates uniformly from zero to 12 m/sec² in 8 seconds starting from rest. During the next 4 seconds, the car decelerates uniformly at a constant rate of 11 m/s². Use motion diagrams. 1. which of the following gives the distance travelled after 10 seconds? a. 202m b. 232m c. 230m d. 222m b. which of the following gives the velocity of the car after 12 seconds? a. 2 m/s b. 5 m/s c. 4 m/s d. 3 m/s

Two trains travel in the opposite direction from the station. Train A travels at the average speed of 40 kph while train B at the average speed of 50 kph. What is the distance between the two trains at the end of 2 hrs? a. 180 km b. 90 km c. 45 km d. 20 km

a. Supposed that this is a motion plot of a car. What is the velocity of the car? b. Supposed that this is a motion plot of a car. What is the acceleration of the car?

Question 6 The position of an object as a function of time is given by x = br² - ct, where b = 2.0 m/s² and c = 6.7 m/s, and x and t are in SI units. What is the instantaneous velocity of the object when 1 = 2.2? A) 2.3 m/s B) 2.1 m/s C) 1.7 m/s D) 2.7 m/s

5. The x-location and y-location of a particle are described by the following equations, where x and y are in meters and time is in seconds: x = 4e-t y = 2 + 8e -2t a. What is the equation of the particle's path in the x-y plane? b. What are the (x,y) coordinates of the particle at time=0 and as time → ∞o? c. What is the speed of the particle at time=0?