3. A box slides down a ramp with a steady forward acceleration of a = +0.9 m/s?. What describes its velocity v as a function time? (a) v is constant (b) v increases linearly (c) v increases quadratically (d) v increases exponentially %3D
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- Two blocks are released from rest on either side of a frictionless half-pipe (see the Figure below). Block B is less massive than block A. The height HB from which block B is released is less than HA, the height from which block A is released. The blocks collide elastically on the flat section. HA B HB 1) After the collision, which is correct? Block A rises to a height greater than HA and block B rises to a height less than HB. Block A rises to a height less than HA and block B rises to a height greater than HB. Block A rises to height HA and block B rises to height HB. Block A rises to height HB and block B rises to height HA. The heights to which the blocks rise depends on where along the flat section they collide. SubmitQUESTION 4 A skier leaves a ramp 20°-degree ramp with an initial velocity v from a height y above the horizontal ground. Calculate the maximum height, ymax, with respect to the horizontal ground that the skier reaches. Express your answer in meters to three significant figures. v = 20.1 m/s Yi = 18.7 m YmaxI need help with d, e, f, and g as well.
- 2. The car shown passes point A which is our origin, i.e. s = 0 at A. The speed of the car increases linearly as described by the function v= 15 + 0.5 s (m/s). Find the y = 16 – B magnitude and direction of the car's acceleration as it reaches point B, a distance 35 m from A.No answer text proVided.. You selected this answer. Question 1 0 / 0.4 pts The figure shows an object moving at constant speed in a circular path. What is the velocity of the object at the indicated point? O 0 = v(- cos(0)î + sin(0)ĵ) O i = v(- sin(@)î + cos(8)ĵ) O ū = v(- sin(0)î – cos(0)ĵ) ü = v(sin(0)î + cos(0)Î) O i = v(cos(0)î + sin(0)ĵ)A fighter jet makes a 90 degree turn while flying at a a constant speed of 200 m/s. The process takes 20 seconds to complete. For this turn, what was the magnitude of the average acceleration of the jet? A) 15.7 m/s^2] B) 11.3 m/s^2 C) 19.4 m/s^2 D) 7.6 m/s^2 E) 13.1 m/s^2
- When throwing a ball straight up, which of the following are correct about the magnitudes of its velocity, v, and its acceleration, a, at the highest point in its path? a. v = 0 and a = 0 b. v and a are both at their maximum values c. v is not zero and a = -9.8 m/s2 d. v = 0 and a = -9.8 m/s2 e. v is not zero and a = 0POSSIBLE POINTS: 7.32 Julietta and Jackson are playing miniature golf. Julietta's ball rolls into a long, straight downward incline with a speed of 2.95 m/s and accelerates at 3.76 m/s/s for 2.74 seconds until it reaches the bottom of the incline and then continues along an elevated section. Determine the length of the incline. BIUT T, 0/ 10000 Word Limit 2 3 4 5 67 8. 10 Nex Sign dut1 Standing on the roof of a 74-m tall building, a girl holds her hand past the edge and throws a ball straight up at 9.8 m/s. The ball rises, then falls and strikes the ground. Considering "up" to be the positive direction, find the ball's velocity v when it is 45 m above the ground. Remember to include a "-" sign if the velocity is negative. U V= m/s Record your numerical answer below, assuming three significant figures.
- Does the magnitude of your acceleration have to be greater than 9.8m/s² to leave the ground? explain.Hint 1 object's at t = 1 s and t = 6 s. An object has an acceleration of +1.2 cm/s². At t = 4 s, its velocity is -3.4 cm/s. Determine the v(t = 1 s) cm/s %3D cm/s %3D (s 9 = ?)aYou are trying to find the acceleration of an object, but each one of you has come up with a different fomula. Check the units to see if you can eliminate any formulas as being wrong