For each of the four graphs below, indicate whether the object whose motion is d

Question

For each of the four graphs below, indicate whether the object whose motion is depicted by the graph experiences

(i) a net force in the positive

x-direction, (ii) a net force in the negative x

-direction, or (iii) zero net force.

Explanation / Answer

velocity is nothing but slope of aboive curves a) slope is decreasing --> velocit is decreasing ---> accelration is negative so force is in '-X' direction b)velocity is decreasing in -ive direction .so accelration is in+ive direction .therefore force acts in +x direction c) velocity is constant ------> accelration is zero .so force is zero d)force first acts in -X direction and then changes to +x direction

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