Answer:
8.21N
Explanation:
What we do here is simple.
Physics is all about understanding and having a different perspective.
OK so we have to find the force.
F=ma,
Here mass is given but not acceleration DIRECTLY.
But the initial and final velocity along with time are given.
So to find acceleration the equation is v-u÷t
Where v is final velocity and u is initial velocity.
So it is 45-20÷0.7=16.42ms-2
Now we have acceleration.
Now we have to find the force.
Before using mass always check if it is in the standard form which is kg. If not change it into kg.
Here the grams are given. So we divide 500g by 1000 to get 0.5kg.
Now we use the formula.
F=0.5x16.42=8.2N
I hope this satisfies you. If you have any questions related to this please feel free to ask me in the comments.
I hope u will follow me and make this the brainliest answer.
With love,
Joel
