Velocity (meters per second) 10 C LO 0 5 10 15 20 Time (seconds) What conclusion can be drawn about the rider's motion? Rider's Motion 0 The rider did not move during the time period between 10 and 15 seconds. The rider rode downhill during the time period between 15 and 20 seconds. The rider slowed down during the time period between 15 and 20 seconds. The rider maintained a constant speed during the time period between 0 and 10 seconds.

Help me please

A swimmer pushes off a wall from rest where she has a constant acceleration of 2m/s2 for 1.5 seconds. She then continues for 10 seconds at constant velocity. At this point, a) How far away from the wall is she if the pool is 50m? b) If she then glides to a stop, what was her deceleration rate? c) Draw the position verse time graph, velocity verse time graph, and acceleration verse time graph. You can assume all accelerations are constant. d) Now take your velocity verse time graph and re calculate the distance covered by the swimmer.

Which of the following statements are true regarding velocity-time graphs?I.     The slope of a velocity-time graph is acceleration.     II.    The graph has a slope of zero if the object is at rest.     III.  A line with negative slope indicates that the object is slowing down.

x (m) 100 50 t (s) 40 10 20 30 Gyge Pearson Ecton inc.pubting A graph of position versus time for a certain object moving along the x-axis is shown on the graph. a. Find the object's velocity in the time interval from 0 s to 20 s. S b. Find the object's velocity in the time interval from 30 s to 40 s.

An object moves so that its position depends on time as x=−10m+(5m/s)t+(2.5m/s2)t2. Which statement below is not true? a) The object never stops moving. b) The object first moves in the negative direction and then in the positive direction c) The object is accelerating d) The speed of the object is always increasing Which answer is correct and why?

A car traveling at an initial speed of 16 m/s to the left (negative direction) slows down to a speed of 4.0 m/s (still moving to the left) over a distance of 40.0 m. 1)  What is the acceleration? Is it positive or negative? 2) How much time went by? 3) What is the car's average velocity during this time?

Two books are on a shelf 1.3 m from one another. Book A has a mass of 2.2 kg. Book B hasa mass of 1.7 kg. A very naughty student sees the books while walking by. She tears somepages out of book A so that its new mass is 2.0 kg and sets it back on the same spot on theshelf.What effect does this have on the gravitational force between the books.AThe gravitational force increases because the mass of one book decreases.BThe gravitational force remains constant because the books remain in the same place.CThe gravitational force on book B decreases because the mass of book A decreases.DThe gravitational force on both books decreases because the mass of book A decreases.

A sprinter reaches his maximum speed in 2.6 seconds from rest with constant acceleration. He then maintains that speed and finishes the 100 yards in the overall time of 10.02 seconds. Determine his maximum speed Vmax- t = 0 - 100 yd t = 2.6 sec t = 10.02 sec

The position vs. time graph for an object is shown here. Is the object's acceleration positive, negative, or zero? 10 ne (s) O negative zero O positive It is impossible to tell w) udgsod