Under the influence of its drive force, a snowmobile is moving at a constant vel

Question

Under the influence of its drive force, a snowmobile is moving at a constant velocity along a horizontal patch of snow. When the drive force is shut off, the snowmobile coasts to a halt. The snowmobile and its rider have a mass of 122 kg. Under the influence of a drive force of 200 N, it is moving at a constant velocity whose magnitude is 4.08 m/s. The drive force is then shut off. Find (a) the distance in which the snowmobile coasts to a halt and (b) the time required to do so.

(a) s=________

(b) t= ________

Explanation / Answer

since it was moving with constant velocity

driving force = haltig force = 200 N

once the drving force is shut off , only the halting force will act which will eventualy stop the snowmobile

a)let distance it travels before it stops be s

acceleration = - 200/(122)=-1.639

s =4.082 / 2*1.639 = 5.0782 m

b)time required to stop is t

t = 4.08/1.639 = 2.489 m/sec

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