1. What constant negative acceleration will enable a driver to decrease the speed from 120 km/hr to 60 km/hr while traveling a distance of 100m?(adsbygoogle = window.adsbygoogle || []).push({});

Where I got stuck [WIGS]: Let us say you don't know the formula used in kinematics... the acceleration is unknown. Let acceleration be a... so,

v = at + C(1), where C(1) is the first constant of integration and

s = 0.5at^2 + C(1)t + C(2) where C(2) is the second constant of integration.

Where will I evaluate my given values of velocity and distance? How can I

get the value of the acceleration?

2. A space shuttle climbs vertically with a constant acceleration of 10 yd/sec^2. If a radar-tracking dish, 1200 yd. from the shuttle's launch pad, follows the shuttle, how fast is the radar dish revolving 8 sec. after blast off?

[WIGS]: from the manual, the answer is 0.06 rad/sec. But what I don't

unerstand is how to arrive at that answer. To analyze the problem, it looks like a right triangle, your base is 1200 yd... how will antidifferentiation take place here? =)

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# Homework Help: In integral calculus

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