Amotorist drives along a straight road at a constant speed of 15.0 m/s. just as she passes a parked motorcycle police officer, the officer starts to accelerate at 2.00 m/s2 to overtake her. assuming the officer maintains this acceleration,
(a) determine the time it takes the police officer to reach the motorist. find (b) the speed and (c) the total displacement of the officer as he overtakes the motorist.

p3. the speed of a bullet as it travels down the barrel of a rifle toward the opening is given by v = (–5.00 × 107)t2 + (3.00 × 105)t, where v is in meters per second and t is in seconds. the acceleration of the bullet just as it leaves the barrel is zero.
(a) determine the acceleration and position of the bullet as a function of time when the bullet is in the barrel.
(b) determine the length of time the bullet is accelerated.
(c) find the speed at which the bullet leaves the barrel. (d) what is the length of the barrel?

(d) what is the length of the barrel?

p4. a novice golfer on the green takes three strokes to sink the ball. the successive displacements are 4.00 m to the north, 2.00 m northeast, and 1.00 m at 30.0° west of south. starting at the same initial point, an expert golfer could make the hole in what single displacement?

In which of the following cases is work being done on an object? question 2 options: pushing against a locked door carrying a box down a corridor pulling a trailer up a hill suspending a heavy weight with a strong chain

Aplane flies a distance d from west to east at a constant speed vp , with respect to the air in a time twe . on the return trip, the plane flies a distance d from east to west at a constant speed vp , with respect to the air in a time tew . on both trips the wind blows from west to east at a constant speed va , with respect to the ground 1) what is tew in terms of vp, va, and d, as needed? tew=dvp tew=dvp+va tew=dva tew=dvpâ’va tew=12dvp tew=12dvp+va tew=12dvpâ’va your submissions: b submitted: saturday, january 26 at 6: 49 pm feedback: feedback will be given once all questions have been attempted and the grade cluster button has been pressed. 2) what is twe in terms of vp, va, and d, as needed? twe=dvp twe=dvp+va twe=dva twe=dvpâ’va twe=12dvp twe=12dvp+va twe=12dvpâ’va your submissions: d submitted: saturday, january 26 at 6: 49 pm feedback: feedback will be given once all questions have been attempted and the grade cluster button has been pressed. 3) assuming d = 2300 miles, vp = 400 miles/hr, and twe = 4 hours, what is va, the speed of the wind with respect to the ground? va = 100 miles/hr va = 575 miles/hr va = 200 miles/hr va = 175 miles/hr va = 975 miles/hr 4) once again, assuming d = 2300 miles, vp = 400 miles/hr, and twe = 4 hours, what is tew, the time it takes the plane to fly a distance d miles from east to west? tew = 5.75 hours tew = 11.5 hours tew = 7.67 hours tew = 8 hours tew = 10.2 hours

Often called simply "velocity," this is the velocity of an object at a particular moment in time.