A runner of mass 51.1 kg starts from rest and accelerates with a constant acceleration of 0.8 m/s2 until she reaches a velocity of 5.8 m/s. She then continues running at this constant velocity. How long in seconds does the runner take to travel 139 m

A motorcycle has a constant acceleration of 4.41 m/s2. Both the velocity and acceleration of the motorcycle point in the same direction. How much time, in seconds, is required for the motorcycle to change its speed from 46.2 to 56.2 m/s?

A rock is held steady over a well and dropped. 4.9 seconds later, the sound of the rock hitting water is heard. Sound travels at a constant speed of 337 m/s. How deep is the well?

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 runner of mass 50.1 kg stařts from rest and accelerates with a constant acceleration of 1.1 m/s2 until she reaches a velocity of 6.5 m/s. She then continues running at this constant velocity. How long in seconds does the runner take to travel 104 m? 载

An object is initially moving at a rate of 14.1 m/s i. What acceleration is required for the object to increase its speed to 26.3 m/s i over a distance of 15.7 m?

Starting at x = - 14 m at time t = 0 s, an object takes 17 s to travel 42 m in the +x direction at a constant velocity. On a sheet of paper, make a position vs. time graph of the object's motion. What is its velocity

Ben starts walking along a path at 33 mi/h. One and a half hours after Ben leaves, his sister Amanda begins jogging along the same path at 55 mi/h. How long (in hours) will it be before Amanda catches up to Ben?

A car is moving with a speed of 41.0 m/s. Then the car slows down with a constant acceleration of magnitude 3.00 m/s . How far does the car travel until it comes to a stop?

An object is thrown straight upward with an initial speed of 21.4 m/s. How long does it take it to reach its maximum height?