The 400-lb crate shown is lowered by means of two overhead cranes. Knowing that at the instant shown the deceleration of cable A is 5 ft/s2 and that of cable Bis 1 ft/s2, determine the tension in each cable. Ta
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- 7) A student is running at her top speed of 5“ to catch a bus, which is stopped at the bus stop. When the student is still 40m from the bus, it starts to pull away, moving with a constant acceleration of 0.174. a) For how much time and what distance does the student have to run at 5“ before she overtakes the bus? b) When she reaches the bus, how fast is the bus travelling?A projectile must be thrown vertically upward with a speed of reach a height of 12.0 m. m/s in order to 1) 35.3 m/s 2) 15.3 m/s 3) 55.3 m/s 4) 25.3 m/s 5) 45.3 m/s2) Angelica ran at her top speed of 0.125 mi/min for 4 minutes. How far did she get?
- Which of the following describes an object which is NOT speeding up? a) v = -1 m/s, a = -8 m/s^2 b) v = 3 m/s, a = 4 m/s^2 c) v = 7 m/s, a = -2 m/s^2 d) v = 0 m/s, a = -6 m/s^24 主 主 6). What is the initial velocity of a ball thrown down off a building that hit the ground at 33 m/s after 4.0 seconds?Describe the difference between someone who is accelerating and someone who is only moving at a constant velocity. A person moving a constant velocity will ‘feel’ how fast they are moving. A person accelerating does not feel the acceleration. A person who is accelerating will ‘feel’ that acceleration, but the person moving at constant velocity will not feel the motion. Both of the above. None of the above.
- A ball is dropped from rest from a height of 20.0 m above the ground:i) How long will it take the ball to hit the ground?When the legal speed limit for the New York Thruway was increased from 55 mi/h to 65 mi/h, how much time was saved by a motorist who drove the 459 km between his entrance and the New York City exit at the legal speed limit? & 41 3 3) Ima Rushin can travel from Milwaukee Avenue to the school entrance gate at a constant speed of 22.5 m/s when the lights are green and there is no traffic. On Wednesday, Ima is stopped by a red light at Landwehr Road. She decelerates at -3.95 m/s', then waits for 45.0 seconds before the light turns green and accelerates back up to speed at 4.91 m/s. ||