Question

need help with ANALYZE PART A AND B and FINALIZE

EXPLORE A car is moving with constant acceleration along a straight road (A) Determine how the velocity and the displacement of the car vary with time if the car is initialy moving to the right with a speed of 9.0 m/s and has an acceleration to the right of 1.7 m/s (B) Determine the velocity as a function of time when the velocity is instead initially to the right and the acceleration of 1.7 ms is to the left. We treat the car as a point by using the cocrdinate x to specify the location along the road of some part of the car as a function of time t The graphs in the Active Figure show the velocity vs. time and position vs, time for various choices of the acceleration CATEGORIZE The car moving allong a stralight road is a problem in one-dimensional motion, and the question calls for using the relation between position and time to calculate speed and velocity. ANALYZE (A) Determine how the velocity varies for positive acceleration and initial velocity to the right The acceleration vs. time plot for constant acceleration is a straight line parallel to the time axis. It lies above the origin for acceleration to the right. During the acceleration, the velocity increases by 1.7 m/s each second. so the velocity vs. time graph ine with a slope of 1.7 m/s per second, and The car starts moving to the right and its speed to the right simply continues to increase (B) Determine how the velocity varies for velocity initially to the right and with constant acceleration to the left In this case the velocity is initially postive but Rs value decreases by 1.7 m/s for each second that passes. Because the acceleration is to the left, it is negative. The velacity vs. time graph satisfies the equation The car moves initially to the right and while it moves its velocity keeps decreasing. Eventualy, its velacity passes through zero and thereafter the car is backing up with increasing speed FINALIZE Check whether this description of motion is consistent with the graphs shown in the Active Figure and the mation it lustrates. Deceleration is an acceleration that causes an object to slow down. Would it be consistent with our sign conventions to define deceleration instead as negative acceleration

Answer 1

please upvote