Question

7:37 a. m. Vie 25 ene. 100 % Puntos:2 A car travels a certain distance along a straight road (in the +x direction). The distance the car travels as a function of time is shown in the fiqure below. When the car changes speéd it does so uniformly. Select the appropriate choice for each statement 1000 E 800 600 400 200 20 40 60 80 Time (s) Less than Greater than Equal to Greater than At 79 sec, the speed is as high as it gets. The acceleration magnitude at 37 sec is. the acceleration magnitude at 15 sec. The x-acceleration is... zero at 26 sec The speed at 10 sec is. the speed at 79 sec. The speed is..... zero at 20 sec Less than Less thanThe x-acceleration is zero at 15 sec By extrapolating the straight sections of the graph, you can estimate the time during which the speed is changing. This, with the change in speed, should let you estimate the magnitude of the acceleration Enviar RespstaIncorrecto. Tries 3/10 Intentos Anteriores Using the graph above, calculate the average speed of the car for the period from 0 to 20.0 s 1.50x10 m/s

Answer 1

The first four answers and 6th answers are correct. So, moving on to the 5th question

At 20 second, the position of the particle is kept constant, which means that the particle is not moving at this instant and between 20 to 30 seconds (approximately from the graph). So, the velocity is EQUAL TO ZERO at 20 seconds