Question

y Juempt t8 take the midterm twice, however your final grade will be the average of the two if you do so! There are 16 multiple choice questions, 5 pts. each, Then you will have to answer two free response questions. Please type as many details as possible, so that I maybe able to give partial credit. Indicate your final answer as "The answer s: for each section. Thank you Good Luck! D Question 10 5 pts A strobe photograph shows equally spaced images of a car moving along a straight road. If the time intervals between images is constant, which of the following cannot be positive? O the average velocity of the car O the acceleration of the car the speed of the car 〇the direction of motion of the car s Previous Quiz saved at 10:21pm Submit Quiz 3 4

Answer 1

correct answer is.................... b ................ the acceleration of the car

velocity is defined as rate of change of displacement

v = displacement/time

displacement and time intervals are same

so the velocity is constant and is positive

acceleration = rate of change in velocity = dv./dt = 0 can never be positive