A car travels in a straight line. The position of the car satisfies the following relationship as a function of time, a = 1,5 m/s B = 0,25 m s² and where acceleration in the following interval: x(t) = at + t=2syt 4 s B t² Find the average velocity and average

Please Asap

A soccer ball starts from rest and accelerates with an acceleration of 0.385 m/s2 while moving down a 8.50 m long inclined plane. When it reaches the bottom, the ball rolls up another plane, where, after moving 14.75 m, it comes to rest. (a) What is the speed of the ball at the bottom of the first plane (in m/s)? (Round your answer to at least two decimal places.) m/s (b) How long does it take to roll down the first plane (in s)? (c) What is the magnitude of the acceleration along the second plane (in m/s?)? m/s2 (d) What is the ball's speed 8.20 m along the second plane (in m/s)? m/s (e) What If? You change the angles of the two inclines in such a manner that the new acceleration down the first incline is a, new down = 2a initiel down and up the second incline is a, new un x initial up, What is the ball's speed 8.20 m up the second plane (in m/s)? 2 m/s

A car begins at the position x1 = 6.0.m with an initial velocity of 20.4 m/s. If the acceleration of the car is 7.80 m/s^2 find the velocity of the car when it has reached the point x2 = 25.0m in m/s. Just input the number in the answer box, don't input units.

solve the following exercise

(a) Calculate the height (in m) of a cliff if it takes 2.19 s for a rock to hit the ground when it is thrown straight up from the cliff with an initial velocity of 8.06 m/s. (Enter a number.) 5.8 m (b) How long (in s) would it take to reach the ground if it is thrown straight down with the same speed? (Enter a number.)

Compute your average velocity in the following two cases: (a) You walk 64.0 m at a speed of 1.28 m/s and then run 64.0 m at a speed of 3.98 m/s along a straight track. (b) You walk for 1.00 min at a speed of 1.28 m/s and then run for 1.39 min at 3.98 m/s along a straight track.

An unidentified flying object (UFO) is observed to travel a total distance of 42000 m, starting and ending at rest, over a duration of 2.07 s. Assuming the UFO accelerated at a constant rate to the midpoint of its journey and then decelerated at a constant rate the rest of the way, what was the magnitude of its acceleration? Express your answer in g s , where 1 g = 9.81 m/s^2.     39,207 g s     19,604 g s     3,997 g s     1,998 g s

QuesuvI Z VETJ Points: 2 Kim is waiting for the results of her physics exam. She walks 8.0 metres north in 5.0 seconds, then 25 metres south in 15.0 seconds, then 10.0 metres north in 10.0 seconds. Use this information to answer the following questions: (1) What is Kim's average speed? (ii) What is Kim's average velocity? DA) Kim's speed is 1.4 m/s B) Kim's speed is 0.23 m/s C) Kim's speed is -0.23 m/s D) Kim's speed is -1.4 m/s E) Kim's velocity is 1.4 m/s [N] F) Kim's velocity is 0.23 m/s [S] G) Kim's velocity is 0.23 m/s [N] ⒸH) Kim's velocity is 1 4 m/s [S] Clear selection Question 3 of 13