  (b) The graph below plots the velocity versus time for an object, different from the one in part (a), moving in one dimension along the x direction.Vx (m/s)102t (s)34What is the speed (magnitude of velocity) of the object at t-2.5 s?6m/sWhat direction is the object moving along that time interval?ОнхThe object is not movingwhat is the acceleration of the object at t = 2.5 s? (Indicate the direction with the sign of your answer.)3.2Think about the definition of acceleration. How is it related to velocity and change in velocity? While the question really wants the instantaneous acceleration, notice that the velocity graph is a straight line from 1 s to 4 s. How can yourelate this to average acceleration? m/sIs the speed increasing, decreasing or constant at that time?increasingdecreasingconstant

Question

Can someone please help me understand what I'm doing wrong on this one? help_outlineImage Transcriptionclose(b) The graph below plots the velocity versus time for an object, different from the one in part (a), moving in one dimension along the x direction. Vx (m/s) 10 2 t (s) 3 4 What is the speed (magnitude of velocity) of the object at t-2.5 s? 6 m/s What direction is the object moving along that time interval? Онх The object is not moving what is the acceleration of the object at t = 2.5 s? (Indicate the direction with the sign of your answer.) 3.2 Think about the definition of acceleration. How is it related to velocity and change in velocity? While the question really wants the instantaneous acceleration, notice that the velocity graph is a straight line from 1 s to 4 s. How can you relate this to average acceleration? m/s Is the speed increasing, decreasing or constant at that time? increasing decreasing constant fullscreen
Step 1

Acceleration is the rate of change of velocity. It is equal to the slope of the graph about the point t = 2.5 s.

Step 2

From the graph, the slope about the point t = 2.5 s is,

Step 3

Want to see the full answer?

See Solution

Want to see this answer and more?

Our solutions are written by experts, many with advanced degrees, and available 24/7

See Solution
Tagged in

Kinematics 