Question

A constant retarding force of 50 N is applied to a

body of mass 20 kg moving initially with a speed

of 20 ms–1. How long does the body take to stop?
It is a numerical
pls answer fast if you know
agrima2907 it Is an assignment ​

Answer 1

Answer:

From Newton's IInd law of motion F

net

=ma

From given data in question F=−50N;m=20kg;u=15m/s;v=0m/s

⇒a=

20

−50

=−2.5m/s

2

Using kinematics equation v=u+at

where v and u are final and initial velocities and a is acceleration and t is time in s;

v=0;u=15m/s;a=−2.5m/s

2

⇒t=

2.5

15

=6s

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Answer 2

Answer:

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