Question

please send me right answer and with full explanation jo bhi mujhe right answer with explanation send karega use m follow karunga​

Answer 1

Answer:

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Explanation:

Given data:

Mass of stone(m)=7000 kg

Distance(S)=400 meter

Time(t)=20 second

1) We have to find the acceleration of the truck

So from the equation of motion S=ut+

2

1

a×t

2

, whereu=0

S=

2

1

a×t

2

a=

t

2

2×S

=

20×20

2×400

=2

sec

2

m

2) Force acting on truck

So,from newton's 2

nd

law of motion

F

=ma=7000×2=14000N=14kN

Answer 2

Answer:

initial velocity u=0

distance travelled= 400m

time taken= 20s

Explanation:

we know s=ut+1/2at2

400=0+a(20)2

or a=2m/s2

now m=7mt=7kg

or f=ma

=7000-2

=14000N

This is your ans.

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