Suppose that the displacement of an aeroplane can be expressed as a function of time in the following way: What is the magnitude of the acceleration of the object?
Point moves along the -axis in such a way that its position is where denotes elapsed time. If has changed from to what is the average velocity of point
At 5:30 pm, Stacey was driving her car at a speed of on a straight avenue. Suddenly she notices that she had forgotten to bring her purse, so she immediately makes a U-turn and heads back to her house. Now she looks at her watch, which says 6:00 pm. If her current speed is what is the magnitude of her average acceleration from 5:30 to 6:00 pm?
John is jogging from his home to the park, and back. If the distance between his home and the park is yards and John has jogged for a total of minutes, what is his average velocity, ?
I'm driving along at a constant speed in my 3-meter-long car when I notice that I am accidentally driving through a red light. If the rear end of my car passes under the light 0.3 seconds after the front end of my car, how fast am I driving in m/s?