an average retarding force that must act on a 5 kg mass to reduce its speed from 65m/s to 15m/s in 0.2s is
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acceleration= 65-15/0.2=250m/S
F=m×a= 250×5= 1250N
F=m×a= 250×5= 1250N
shrk1178:
there is no any option for 1250N
can you tell unit of force in options
that Is N
than answer should be -1250N
sorry bro...u tried well...........
may be
u r right thnxx
Answered by
0
:
Explanation:acceleration= 65-15/0.2=250m/S
F=m×a= 250×5= 1250N
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