A particle moves along the x axis from xi to x f .Of the following values of the initial and final coordinates, which results in the displacement with the largest magnitude?
A particle moves along the x axis from xi to x f .Of the following values of the initial and final coordinates, which results in a negative displacement?
A car starts from Hither, goes 50 km in a straight line to Yon, immediately turns around, and returns to Hither.The time for this round trip is 2 hours.The magnitude of the average velocity of the car for this round trip is:
The coordinate of an object is given as a function of time by x = 7t - 3t2, where x is in meters and t is in seconds.Its average velocity over the interval from t = 0 to t = 2 s is:
The position y of a particle moving along the y axis depends on the time t according to the equation y = at - bt2.The dimensions of the quantities a and b are respectively:
Two automobiles are 150 kilometers apart and traveling toward each other.One automobile is moving at 60 km/h and the other is moving at 40 km/h.In how many hours will they meet?
A car travels 40 kilometers at an average speed of 80 km/h and then travels 40 kilometers at an average speed of 40 km/h.The average speed of the car for this 80 km trip is:
A car starts from Hither, goes 50 km in a straight line to Yon, immediately turns around, and returns to Hither.The time for this round trip is 2 hours.The average speed of the car for this round trip is:
You leave your house and drive to your friend's house, where you stay a while.Then you come back home.Which of the following must be true of your trip?
Each of four particles moves along an x axis.Their coordinates (in meters)as functions of time (in seconds)are given by For which of these particles is the velocity increasing for t > 0?