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A car moving with an initial velocity of 25 m/s north has a constant acceleration of 3 m/s2 South. After 6 seconds its velocity will be:

A football is kicked into the air at an angle of 45 degrees with the horizontal. At the very top of the ball’s path, its velocity is _______.

An object is thrown straight up from ground level with a speed of 50 m/s. If g = 10 m/s2 its distance above ground level 1.0 s later is:  

Determine if the following statement about  displacement is TRUE or FALSE:A person makes a round-trip journey, finishing where s/he started. The displacement for the trip is 0 and the distance is some nonzero value.

How many significant digits does the number 15.00 have?

Consider the following five graphs (note the axes carefully). Which of these represents motion at constant speed?

A stone is thrown horizontally with an initial speed of 10 m/s from the edge of a cliff.  A stop watch measures the stone’s trajectory time from the top of the cliff to the bottom to be 4.3 s.  What is the height of the cliff?

A jumper in the long-jump goes into the jump with a speed of 12 m/s at an angle of 20° above the horizontal.  How long is the jumper in the air before returning to the Earth?

At what angle should a water-gun be aimed in order for the water to land with the greatest horizontal range?

A car maintains a constant velocity of 100 km/hr for 10 seconds. During this interval it acceleration is: