1.

Velocity time graph of a 50 gram marble rolling on floor in given below find- 1. time in which it stops2. negative acceleration produced on it.3. positive force acting on the marble​​

Answer»

1. Time is 25 seconds2. Negative acceleration is 1.2 m/s²3. Positive FORCE is 60NExplanation:2. INITIAL velocity, u=30m/sFinal velocity=0 m/sTime, t=25sUsing the FIRST equation of motion,Acceleration =(v-u)/t= (0-30)/25 = -1.2 m/s²3. If mass of the MARBLE is 50g, force can be CALCULATED usingF=ma = -1.2×50=-60N



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