The figure shows a path of a squirrel, moving from A ( at time t=0), to point D (at 15.0 min). What is the magnitude of the velocity between point A and point D? у (m) 50 25 Нx (m) 50 25
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- We are standing on the top of a 1040 feet tall building and launch a small object upward. The object's height, measured in feet, after t seconds is h(t) = 16t? + 128t + 1040. A) What is the object initial velocity? ft/second B) What is the highest point that the object reaches? feetA boy standing on a 2.0 m platform kicks a soccer ball at a 8.0 m tall wall 5 m away. The ball has an initial velocity of 12 m/s, 15 above horizontal. How fast does the ball strike the wall? 8 m wall 5 тA badger looking for food travels 8.0 km [S], 3.0 km [E], 5.0 km [S], 9.0 km [N], then 3.0 km [W]. What is the badger's total displacement?
- The position of an object as a function of time is given by x = br² - ct, where b = 2.0 m/s2 and e = 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 Your answer: O A O B O CStarting from the origin of some coordinate system, a chicken moves 2 m to the +x-direction for 2 s, then 3 m to the +y-direction for 3 s. What is the chicken's average velocity for the whole motion? (2 m/s) i + (3 m/s) ĵ 1m/s O (금m/s)i+(m/s) 3 O (1m/s) i + (1 m/s) 3Maria throws two stones from the top edge of a building with a speed of 2.9 x 10' m/s. The height of the building is 7 x 102 meters. She throws one straight down and the other straight up. The first one hits the street in a time tj. How much later is it before the second stone hits? answer in seconds.
- We are standing on the top of a 720 feet tall building and launch a small object upward. The object's height, measured in feet, after t seconds is h(t) = - 16t2 +64t+ 720. = A) What is the object initial velocity? B) What is the highest point that the object reaches? ft/second feetVelocity of a man is 25 units in the positive X direction and 75 units in negative Y direction starting from the origin. Velocity of a woman is 25 units in the positive Y direction and 75 units in the negative X direction starting from the origin. What is the relative velocity of the man with respect to the woman? a) 100î – 100ĵ b) 100î + 100ĵ c) -100î – 100ĵ d) 0î + 0ĵEx. 2. A car driver in northern Ontario makes the following displacements: Ad₁= 15.0 km [W 30.0°N] Ad2 = 10.0 km [W 75.0°N] Ad3= 10.0 km [E 70.0° N] The trip takes 0.50 h. Calculate the average velocity of the car and driver in km/h.
- A girl is standing at the edge of a cliff 100. m above the ground. She reaches out over the edge of the cliff and throws a rock straight upward with a speed 8.00 m/s. a) How long does it take the rock to hit the ground? b) What is the speed of the rock the instant before it hits the ground? Please type answerThe figure here shows the speed v versus height y of a ball tossed directly upward, along a y axis. Distance d is 0.37 m. The speed at height yA is vA. The speed at height yB is vA/3. What is speed vA?v (m/s) 5.0- 4.0 3.0- 2.0 1.0 +++(s) 1.0 2.0 20 4.0 5,0 6.0 7.0 8.0 9.0 -1.0 -2.0 -3.0- -4.0+ The motion of a particle is described in the velocity vs. time graph shown in the above figure. Over the nine-second interval shown, we can say that the acceleration of the particle: O increases and then decreases only decreases. constant Increases