Question

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Answer 1

Answer:B.200N-sec and 10m/sec2

Explanation:from newton 2nd law of motion

f=ma ---(1)

and we have,

f(force)=50N and m(mass)=5kg ,

put in eq. (1), we get

a(acceleration)=10m/sec2

2nd part - pulse

we know that

I(pulse)=∫fdt,----(2)

we have

f=50N and t(time interval)=4 sec

I=50*4N-sec

I=200N-sec

hope it helps