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2) How long will it take a dropped object to reach the ground if dropped from a height of
1.75 meters?
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- 1.) A plane flies the distance between two cities in 2 hour and 45 minutes with a velocity of 800km/h. Another plane covers that distance with 950 km/h. What is the flight time of the second plane? ( in minutes)#10) Use the below graph of x-position as a function time to answer questions (A - D): X-Position (m) 5 4 3 -1 -2 -3 x-Position as a function of Time 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 2.25 2.5 2.75 3 3.25 3.5 3.75 4 Time (s) (A) What is the average velocity for the object in the x-direction between t = 0.75 s and t = 3.50 s? (report your answer to 3 sig figs) (B) Draw a solid line on the graph that supports the above calculation done in part (A). Turn this sheet in with this line drawn on it. (C) Graphically determine what is the best determination for the instantaneous velocity for the object at t = 1.00 seconds (report your answer to 3 sig figs). (D) Draw a dashed line on the graph that supports the above calculation done in part (C). Turn this sheet in with this line drawn on it.1. A dog runs back and forth between its two owners, who are walking toward one another (Figure below). The dog starts running when the owners are 10.0 m apart with a speed of 3.0 m/s. (a) If the owners each walk with a speed of 1.3 m/s, how far has the dog traveled when the owners meet? (b) If one owner walks with a speed of 1.6 m/s while the other walks at 1.3 m/s, what is the total distance traveled by the dog when the owners meet? 13 m/s 30 m/s -100 m- 13 m/s
- PHYSICS NAME: Mariam Graphical Interpretation of Motion Directions: Circle your answer choice and provide a brief justification for that answer. For example, if you found your answer by using the area under the graph, just shade that area. If you used slope, show the calculation or "box in" the region you used for the slope. 1) Acceleration versus time graphs for five objects are shown below. All axes have the same scale. Which object had the greatest change in velocity during the interval? (A) (B) (C) (D) (E) Time Time Time Time Time 2) When is the acceleration the most negative? (A) R to T (B) T to V (C) V (D) X (E) X to Z STU W XY Z Time 3) To the right is a graph of an object's motion. Which sentence is the best interpretation? (A) The object is moving with a constant, non-zero acceleration. (B) The object does not move. (C) The object is moving with a uniformly increasing velocity. (D The object is moving at a constant velocity. (E) The object is moving with a uniformly increasing…An object is dropped from a height of 800 ft above the ground. a) How long will it take the object to reach the ground, and b) with what velocity will it strike the ground?4. A stone is thrown vertically upward with an initial velocity of 32 ft/s from the top of a building. (a) How high will it rise? (b) When and at what velocity will it strike the ground if the height of the building is 384ft?
- A rock is thrown directly upward from the edge of the roof of a building that is 66.2 meters tall. The rock misses the building on its way down, and is observed to strike the ground 4.00 seconds after being thrown. Neglect any effects of air resistance. With what speed was the rock thrown? A 2.87 m/s B) 7.6 m/s (c) 3.05 m/s 12.56 m/s2) A volleyball of mass 0.28 kg is dropped from the top of the bleachers (height equals 12 m). What is the speed of the volleyball right before it hits the gym floor?An object is dropped at rest from the roof of a building of height h. Neglect air resistance. In the last t = 0.30 seconds the object falls a distance of h/5. What is the height of the building h in meters?
- A stone is dropped from the top of a cliff. A precision equipment was used in order to measure the time for the sound of a splash to return. Calculate the distance to the water if the speed of sound is 335 m/s and sound returns in 3 sTime of Flight (s) Height (m) Ideal Launch Speed (m/s) Predicted Range (m) Track Length (m) Measured Range (m) “Real” Launch Speed (m/s) % Difference in Speeds 1.40 2.20 1.67 1.00 1.77 1.46 0.73 1.45 1.29 0.45 1.09 0.97 0.22 0.76 0.66 The launch height is 0.742 m above the floor. Track Length is the entire length of track for which the tires are in contact with the track. -The car’s velocity at launch is calculated using two different techniques. Why are they different? What is this difference attributed? Write a paragraph to discuss the difference between the velocities and indicate which technique gives an “ideal” velocity and which one gives the “real” velocity. -Write a paragraph discussing when the car becomes a projectile and then show the equation used to calculate the time of flight (i.e., the time that the car is a…12.(A) While hiking along the top of a cliff, Harlan knocked a pebble over the edge. The height, h, in metres, of the pebble above the ground after t seconds is modelled by h = -5t2 - 4t + 120. a) How long will the pebble take to hit the ground? b) For how long is the height of the pebble greater than 95 m? (2.5)