Question

A body of mass 2 kg starting from rest acquire a velocity of 25 m/s in just 15 sec. Find the force applied​

Answer 1

• Force is given as

Force = mass × acceleration

Given : mass = 2 kg

           velocity= 25m/s

           time = 15 sec

• We will first find the acceleration ,

Aceeleration = velocity/time

                      =25/15

                      =1.6 m/s²

• Now, we have both mass and acceleration

so, Force = 2 × 1.6

              =  3.2 N

The force applied will be 3.2 N

Answer 2

Answer:

HEY MATE

here is your answer

hope it is helpful for you

Explanation:

☆☞Given that,

Mass m=2kg

Initial velocity u=0m/s

Final velocity v=20m/s

Time t=4s

Now, the acceleration is

v=u+at

a= tv−u

a= 4 20

a=5m/s 2

Now, the force

F=ma

F=2×5

F=10N

Now, the displacement is

s=ut+ 1 2

s=0+ 2

1×5×16

s=40m

Now, the work done is

W=F⋅s

W=10×40

W=400J

Now, the power is

P= tW

P= 2400

P=200watt

Hence, the power is 200 watt

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